View source for Dominant-party system

{{Short description|Continuous dominance of a single political party in elections}}
{{distinguish|One-party state}}
{{Use mdy dates|date=November 2025}}
{{multiple issues|{{update|date=January 2015|inaccurate=yes}}
{{original research|date=January 2021}}
{{cleanup rewrite|date=February 2021}}}}
{{party politics}}
A '''dominant-party system''', or '''one-party dominant system''', is a political occurrence in which a single political party continuously dominates election results over running opposition groups or parties.<ref>{{Cite journal|last=Ostroverkhov|first=A. A.|date=2017|title=In Searching for Theory of One-Party Dominance: World Experience of Studying Dominant-Party Systems (II)|journal=Politeia|volume=87|issue=4|pages=133–149 (p. 136)|doi=10.30570/2078-5089-2017-87-4-133-149|doi-access=free}}</ref> Any [[ruling party]] staying in power for more than one consecutive term may be considered a ''dominant party'' (also referred to as a ''predominant'' or ''hegemonic'' party).<ref>{{Cite journal|last=Ostroverkhov|first=A. A.|date=2017|title=In Searching for Theory of One-Party Dominance: World Experience of Studying Dominant-Party Systems (I)|journal=Politeia|volume=86|issue=3|pages=136–153 (p. 148)|doi=10.30570/2078-5089-2017-86-3-136-153|doi-access=free}}</ref> Some dominant parties were called the ''natural governing party'', given their length of time in power.<ref>{{cite web|url=https://parli.ca/natural-governing-party/|work=The Dictionary of Canadian Politics|publisher=Campbell Strategies|title=Natural Governing Party|year=2022|access-date=December 5, 2022}}</ref><ref>{{cite book|isbn=978-0-307-74387-9|year=2017|page=338|publisher=Knopf Doubleday|title=Hoover: An Extraordinary Life in Extraordinary Times|quote=The Republicans had come to see themselves as the natural governing party of the United States. Leaving aside the Cleveland and Wilson accidents, they had been in power since Grant's day. If Republican delegates declared an uncharismatic Hoover worthy of the presidency, voters were unlikely to argue. |chapter=The Wonder Boy}}</ref><ref>{{cite web|url=https://asia.nikkei.com/Opinion/UMNO-intends-to-return-as-Malaysia-s-natural-governing-party|title=UMNO intends to return as Malaysia's natural governing party|website=Nikkei|access-date=December 5, 2022|date=November 15, 2022|last=Chin|first=James}}</ref>

''Dominant'' parties, and their domination of a state, develop out of one-sided electoral and party constellations within a multi-party system (particularly under presidential systems of governance), and as such differ from states under a [[one-party system|''one''-party system]], which are intricately organized around a specific party.{{Citation needed|date=April 2024}} Sometimes the term "''de facto'' one-party state" is used to describe dominant-party systems which, unlike a one-party system, allows (at least nominally) democratic multiparty elections, but the existing practices or balance of political power effectively prevent the opposition from winning power, thus resembling a one-party state.{{Citation needed|date=April 2024}} Dominant-party systems differ from the political dynamics of other dominant multi-party constellations such as [[consociationalism]], [[grand coalition]]s and [[two-party system]]s, which are characterized and sustained by narrow or balanced [[electoral competition|competition]] and cooperation.{{Citation needed|date=April 2024}}

In political literature, more than 130 dominant party systems between 1950 and 2017 were included in a list by A. A. Ostroverkhov.<ref name="Ostroverkhov">{{cite journal |url=http://politeia.ru/files/articles/rus/Politeia-2017-4(87)-133-149.pdf |last=Ostroverkhov |first=A. A. |title=В поисках теории однопартийного господства: мировой опыт изучения систем с доминантной партией (II) |trans-title=In search of a theory of one-party domination: world experience in studying systems with a dominant party (II) |date=2017 |language=ru |journal=Politeia |volume=4 |issue=87 |archive-date=February 8, 2020 |archive-url=https://web.archive.org/web/20200208002311/http://politeia.ru/files/articles/rus/Politeia-2017-4(87)-133-149.pdf}}</ref> For example, in the post-Soviet states, researchers classify parties such as United Russia and [[Amanat (political party)|Amanat]] ([[Kazakhstan]]) as dominant parties on the basis that these parties have long held the majority of seats in parliament (although they do not directly form the government or appoint officials to government positions).<ref>{{cite journal |last1=Isaacs |first1=R. |last2=Whitmore |first2=S. |title=The Limited Agency and Life-Cycles of Personalized Dominant Parties in Post-Soviet Space: The Case of United Russia and Nur Otan |date=2013 |journal=Democratization |volume=4 |issue=21}}</ref> In Russian political science literature, such associations are often called "parties of power".{{Citation needed|date=April 2024}}

It is believed that a system with a dominant party can be either authoritarian or democratic. However, since there is no consensus in the global political science community on a set of mandatory features of democracy (for example, there is a point of view according to which the absence of alternation of power is, in principle, incompatible with democratic norms),<ref>{{cite book |last=Przeworski |first=A. |title=Democracy and Development: Political Institutions and Well-Being in the World, 1950–1990 |date=2000 |location=Cambridge |publisher=Cambridge University Press |page=16}}</ref> it is difficult to separate the two types of one-party dominance.<ref>{{cite journal |url=http://politeia.ru/files/articles/rus/Politeia-2017-4(87)-133-149.pdf |last=Ostroverkhov |first=A. A. |title=В поисках теории однопартийного господства: мировой опыт изучения систем с доминантной партией (II) |trans-title=In search of a theory of one-party domination: world experience in studying systems with a dominant party (II)| date=2017 |journal=Politeia |volume=4 |issue=87 |page=134 |archive-date=February 8, 2020 |archive-url=https://web.archive.org/web/20200208002311/http://politeia.ru/files/articles/rus/Politeia-2017-4(87)-133-149.pdf}}</ref>

==Theory==
Dominant-party systems are commonly based on [[majority rule]] for [[proportional representation]] or [[Majority bonus system|majority boosting]] in [[semi-proportional representation]].{{Citation needed|date=April 2024}} [[Plurality voting]] systems can result in large majorities for a party with a lower percentage of the vote than in proportional representation systems due to a fractured opposition (resulting in [[wasted vote]]s and a lower number of parties entering the legislature) and [[gerrymandering]].{{Citation needed|date=April 2024}}

Critics of the "dominant party" theory argue that it views the meaning of democracy as given, and that it assumes that only a particular conception of [[representative democracy]] (in which different parties alternate frequently in power) is valid.<ref name="Suttner">[[Raymond Suttner|Suttner, R.]] (2006), "Party dominance 'theory': Of what value?", ''Politikon'' 33 (3), pp. 277–297</ref> [[Raymond Suttner]], himself a former leader in the [[African National Congress]] (ANC), argues that "the dominant party 'system' is deeply flawed as a mode of analysis and lacks explanatory capacity. But it is also a very conservative approach to politics. Its fundamental political assumptions are restricted to one form of democracy, namely electoral politics, and display hostility towards popular politics. This is manifest in the obsession with the quality of electoral opposition, and its sidelining or ignoring of popular political activity organised in other ways. The assumption in this approach is that other forms of organisation and opposition are of limited importance or a separate matter from the consolidation of their version of democracy."<ref name=Suttner/>{{Primary source inline|date=April 2024}}{{Long quote|date=April 2024}}

One of the dangers of dominant parties is "the tendency of dominant parties to conflate party and state and to appoint party officials to senior positions irrespective of their having the required qualities."<ref name=Suttner/> However, in some countries this is common practice even when there is no dominant party.<ref name=Suttner/> In contrast to [[One-party state|one-party system]]s, dominant-party systems can occur within a context of a democratic system as well as an authoritarian one.{{Citation needed|date=April 2024}} In a one-party system other parties are banned, but in dominant-party systems other political parties are tolerated, and (in democratic dominant-party systems) operate without overt legal impediment, but do not have a realistic chance of winning; the dominant party genuinely wins the votes of the vast majority of voters every time (or, in authoritarian systems, claims to).{{Citation needed|date=April 2024}} Under authoritarian dominant-party systems, which may be referred to as "[[electoralism]]" or "soft authoritarianism", [[Parliamentary Opposition|opposition]] parties are legally allowed to operate, but are too weak or ineffective to seriously challenge power, perhaps through various forms of corruption, constitutional quirks that intentionally undermine the ability for an effective opposition to thrive, institutional and/or organizational conventions that support the status quo, occasional but not omnipresent [[political repression]], or inherent cultural values averse to change.{{Citation needed|date=April 2024}}

In some states opposition parties are subject to varying degrees of official harassment and most often deal with restrictions on free speech (such as press laws), lawsuits against the opposition, and rules or electoral systems (such as [[gerrymandering]] of electoral districts) designed to put them at a disadvantage.{{Citation needed|date=April 2024}} In some cases outright [[electoral fraud]] keeps the opposition from power.{{Citation needed|date=April 2024}} However, some dominant-party systems occur, at least temporarily, in countries that are widely seen, both by their citizens and outside observers, to be textbook examples of democracy.{{Citation needed|date=April 2024}} An example of a genuine democratic dominant-party system would be the pre-[[The Emergency (India)|Emergency]] India, which was almost universally viewed by all as being a democratic state, even though the only major national party at that time was the [[Indian National Congress]].{{Citation needed|date=April 2024}} The reasons why a dominant-party system may form in such a country are often debated: supporters of the dominant party tend to argue that their party is simply doing a good job in government and the opposition continuously proposes unrealistic or unpopular changes, while supporters of the opposition tend to argue that the electoral system disfavors them (for example because it is based on the principle of [[first past the post]]), or that the dominant party receives a disproportionate amount of funding from various sources and is therefore able to mount more persuasive campaigns.{{Citation needed|date=April 2024}} In states with ethnic issues, one party may be seen as being the party for an ethnicity or race with the party for the majority ethnic, racial or religious group dominating, e.g., the [[African National Congress]] in [[South Africa]] (governing since the end of [[apartheid]] in 1994) has strong support amongst [[Bantu peoples of South Africa]] and the [[Ulster Unionist Party]] governed [[Northern Ireland]] from its creation in 1921 until 1972 with the support of the [[Protestant]] majority.{{Citation needed|date=April 2024}} Similarly, the Apartheid-era [[National Party (South Africa)|National Party]] in South Africa had the support of [[Afrikaners]] who make up the majority of [[White South Africans]] while English-speaking white South Africans tended towards more liberal and reform-oriented parties like the [[Progressive Federal Party]].{{Citation needed|date=April 2024}}

[[Subnational entities|Sub-national entities]] are often dominated by one party due to the area's demographic being on one end of the spectrum or espousing a unique local identity.{{Citation needed|date=April 2024}} For example, the current elected [[Government of the District of Columbia|government]] of the [[District of Columbia]] has been governed by [[Democratic Party (United States)|Democrats]] since its creation in the 1970s, [[Bavaria]] by the [[Christian Social Union of Bavaria|Christian Social Union]] since 1957, [[Madeira Islands|Madeira]] by the [[Partido Social Democrata (Portugal)|Social Democrats]] since 1976, and [[Alberta]] by the [[Alberta Progressive Conservative Party|Progressive Conservatives]] from 1971 to 2015. On the other hand, where the dominant party rules nationally on a genuinely democratic basis, the opposition may be strong in one or more subnational areas, possibly even constituting a dominant party locally; an example is South Africa, where although the African National Congress is dominant at the national level, the opposition [[Democratic Alliance (South Africa)|Democratic Alliance]] is strong to dominant in the [[Western Cape|Province of Western Cape]].{{Citation needed|date=April 2024}}

== Methods of dominant-party governments ==
In dominant-party governments, they use institutional channels, rather than repression, to influence the population.<ref>{{Cite book |last=Frantz |first=Erica |date=November 15, 2018 |title=Authoritarianism |series=What Everyone Needs to Know |publisher=Oxford University Press |doi=10.1093/wentk/9780190880194.001.0001|isbn=978-0-19-088019-4 }}</ref>{{page needed|date=November 2025}} Coercive distribution can control citizens and economic elites through land reform, poverty alleviation, public health, housing, education, and employment programs.<ref>{{Cite journal |last1=Hassan |first1=Mai |last2=Mattingly |first2=Daniel |last3=Nugent |first3=Elizabeth R. |date=May 12, 2022 |title=Political Control |journal=Annual Review of Political Science |volume=25 |issue=1 |pages=155–174 |doi=10.1146/annurev-polisci-051120-013321 |issn=1094-2939|doi-access=free }}</ref> Further, they distribute private goods to the winning coalition (people who are necessary for its reign) in order to stay in power.<ref>{{Cite book |last=Newton |first=Kenneth |title=Foundations of comparative politics: democracies of the modern world |date=December 24, 2020 |publisher=Cambridge University Press |isbn=978-1-108-92494-8 |oclc=1156414956}}</ref> Giving the winning coalition private goods also prevents civil conflict.<ref>{{Cite journal |last=Meng |first=Anne |date=September 25, 2019 |title=Ruling Parties in Authoritarian Regimes: Rethinking Institutional Strength |journal=British Journal of Political Science |volume=51 |issue=2 |pages=526–540 |doi=10.1017/s0007123419000115 |s2cid=204450972 |issn=0007-1234|doi-access=free }}</ref> They also use the education system to teach and uphold compliance. The recruiting, disciplining, and training of teachers allow for authoritarian governments to control teachers into following their objective: to foster compliance from the youth.<ref>{{Cite journal |last1=Weigele |first1=Annika |last2=Brandt |first2=Cyril Owen |date=January 2022 |title='Just keep silent'. Teaching under the control of authoritarian governments: A qualitative study of government schools in Addis Ababa, Ethiopia |journal=International Journal of Educational Development |volume=88 |article-number=102497 |doi=10.1016/j.ijedudev.2021.102497 |s2cid=245164001 |issn=0738-0593}}</ref> Another way that they maintain control is through hosting elections. Even though they would not be fair elections, hosting them allows citizens to feel that they have some control and a political outlet.<ref>{{Cite journal |last1=Hong |first1=Hao |last2=Wong |first2=Tsz-Ning |date=May 5, 2020 |title=Authoritarian election as an incentive scheme |journal=Journal of Theoretical Politics |volume=32 |issue=3 |pages=460–493 |doi=10.1177/0951629820910563 |s2cid=13901166 |issn=0951-6298}}</ref> They can also enhance rule within their own state through international collaboration, by supporting and gaining the support, especially economic support, of other similar governments.<ref>{{Cite journal |last=von Soest |first=Christian |date=October 25, 2015 |title=Democracy prevention: The international collaboration of authoritarian regimes |journal=European Journal of Political Research |volume=54 |issue=4 |pages=623–638 |doi=10.1111/1475-6765.12100 |issn=0304-4130}}</ref>

==Current dominant-party systems==

===Africa===
*{{flag|Angola}}
** [[MPLA|Popular Movement for the Liberation of Angola]], ''Movimento Popular de Libertação de Angola'' (MPLA):<ref>{{cite book |title=Africa Yearbook: Politics, Economy and Society South of the Sahara in 2008 |last1=Mehler |first1=Andreas |last2=Melber |first2=Henning |last3=Van Walraven |first3=Klaas |year=2009 |publisher=Brill |location=Leiden |isbn=978-90-04-17811-3 |page=411 |url=https://books.google.com/books?id=xOVYchAfCYYC }}</ref><ref>{{cite web |url=http://www.bti-project.org/country-reports/esa/ago/ |title=2012 • Transformationsindex |access-date=April 1, 2012 |archive-url=https://web.archive.org/web/20120401150404/http://www.bti-project.org/country-reports/esa/ago/ |archive-date=April 1, 2012 }} {{in lang|en}}</ref> In power since independence, November 11, 1975; sole legal party, 1975–92
** Formerly led by President [[José Eduardo dos Santos]] (in office from September 10, 1979, to August 28, 2017) and now led by [[João Lourenço]].
** [[1992 Angolan general election|Presidential election, 1992]]: dos Santos (MPLA-PT) won 49.6% of the vote. As this was not an absolute majority, a runoff against Jonas Savimbi (40.1%) was required, but did not take place.
** New constitution, 2010: popular election of president abolished in favour of a rule that the top candidate of the most voted party in parliamentary elections becomes president.
** [[2022 Angolan general election|Parliamentary election, 2022]]: MPLA 51.17% and 124 of 220 seats.
* {{Flag|Burundi}}
** [[National Council for the Defense of Democracy – Forces for the Defense of Democracy|National Council for the Defense of Democracy-Forces for the Defense of Democracy]] (CNDD-FDD) In power since 2005
** Led by President [[Évariste Ndayishimiye]], in office since June 18, 2020
** [[2020 Burundian general election|Presidential election, 2020]]: Évariste Ndayishimiye (CNDD-FDD) 71.45%
** [[2020 Burundian general election|Parliamentary election, 2020]]: CNDD-FDD 70.98% and 72 of 100 seats.
*{{flag|Cameroon}}<ref>{{Cite web |last1=Siegle |first1=Joseph |last2=Wahila |first2=Hany |date=January 13, 2025 |title=Cameroon: Change is Coming but More of the Same? |url=https://africacenter.org/spotlight/2025-elections/cameroon/ |access-date=January 23, 2025 |website=African Center For Strategic Studies}}</ref>
** [[Cameroon People's Democratic Movement]] (Rassemblement Démocratique et Populaire du Cameroun, RDPC): Led by President [[Paul Biya]], in office since November 6, 1982 
** In power, under various names, since independence, January 1, 1960 (Sole legal party, 1966–1990)
** [[2018 Cameroonian presidential election|Presidential election, 2018]]: Paul Biya (RDPC) 71.28%
** [[2020 Cameroonian parliamentary election|Parliamentary election, 2020]]: RDPC 139 of 180 seats
*'''{{flag|Chad}}''': 
**[[Patriotic Salvation Movement]] (Mouvement Patriotique de Salut de SMPS) Founded by the former president [[Idriss Déby]] and led by President [[Mahamat Déby]].
**In power since 1990.
**[[2024 Chadian parliamentary election|Parliamentary election, 2024]]: MPS 124 of 188 seats
**[[2024 Chadian presidential election|Presidential election, 2024]]: Mahamat Déby (MPS) 61.00%.
*{{Flag decoration|Comoros}} [[Comoros]]
**[[Convention for the Renewal of the Comoros]] (''Convention pour le Renouveau des Comores'', CRC): Led by President [[Azali Assoumani]], in office from 30 April 1999 to 21 January 2002, 26 May 2002 to 26 May 2006, and since 26 May 2016
**In power since its formation in 2002
**[[2025 Comorian parliamentary election|Parliamentary election, 2025]]: CRC 31 of 33 seats<ref>{{Cite news|title=Comoros ruling party wins parliamentary elections, opposition rejects results|url=https://www.reuters.com/world/africa/comoros-ruling-party-wins-parliamentary-elections-opposition-rejects-results-2025-01-15/|work=Reuters|access-date=2025-12-02|archive-url=http://web.archive.org/web/20250116013919/https://www.reuters.com/world/africa/comoros-ruling-party-wins-parliamentary-elections-opposition-rejects-results-2025-01-15/|archive-date=2025-01-16|language=en-US}}</ref>
**[[2024 Comorian presidential election|Presidential election, 2024]]: Azali Assoumani (CRC) 57.02%
*{{flag|Republic of the Congo}}{{Citation needed|date=July 2010}}
** [[Congolese Party of Labour]] (Parti Congolais du Travail, PCT): Led by President [[Denis Sassou-Nguesso]], in office from February 8, 1979, to August 31, 1992, and since October 15, 1997
** In power, under various names, from 1969 to 1992 and since 1997 (Sole legal party, 1963–1990)
** [[2022 Republic of the Congo parliamentary election|Parliamentary election, 2022]]: PCT 112 of 151 seats
** [[2021 Republic of the Congo presidential election|Presidential election, 2021]]: Denis Sassou-Nguesso (PCT) 88.40%
*{{flag|Djibouti}}<ref>{{Cite web |date=2023 |title=Djibouti: Freedom in the World 2024 Country Report |url=https://freedomhouse.org/country/djibouti/freedom-world/2024 |access-date=January 23, 2025 |website=Freedomhouse.org}}</ref>
** [[People's Rally for Progress]] (Rassemblement Populaire pour de Progrès, RPP)
** Led by President [[Ismail Omar Guelleh]], in office since May 8, 1999
** In power since its formation in 1979 (Sole legal party, 1979–1992)
** [[2023 Djiboutian parliamentary election|Parliamentary election, 2023]]: RPP in coalition, 93.68% and 59 of 65 seats
** [[2021 Djiboutian presidential election|Presidential election, 2021]]: Ismail Omar Guelleh (RPP) 97.30%
*{{flag|Equatorial Guinea}}<ref>{{Cite web |date=2023 |title=Equatorial Guinea |url=https://www.idea.int/democracytracker/country/equatorial-guinea |quote=Equatorial Guinea has been a dominant party state for decades, as the PDGE and the president's inner circle control the most important offices of the state, and all but one of the seats in the bicameral legislature.}}</ref>
** [[Democratic Party of Equatorial Guinea]] (Partido Democrático de Guinea Ecuatorial, PDGE)
** Led by President [[Teodoro Obiang Nguema Mbasogo]], in office since August 3, 1979: In power since its formation in 1987 (Sole legal party, 1987–1991)
** [[2017 Equatorial Guinean legislative election|Senate election, 2017]]: PDGE 92.00% 55 of 70 seats (Includes 15 unelected representatives appointed by the president.)
** Chamber of People's Representatives election, 2017: PDGE 92.00% 99 of 100 seats
** [[2022 Equatorial Guinean general election|Presidential election, 2022]]: Teodoro Obiang Nguema Mbasogo (PDGE) 97.00%
*{{flag|Ethiopia}}{{Citation needed|date=July 2010}}
**[[Prosperity Party]], previously [[Ethiopian People's Revolutionary Democratic Front]] (EPRDF): Led by Prime Minister [[Abiy Ahmed]], in office since April 2, 2018
** In power since May 28, 1991 (party reorganization 2019)
** [[2021 Ethiopian general election|Parliamentary election, 2021]]: 410 of 483 seats
** Regional election, 2015: Regional partners 1987 of 1990 seats
*{{Flag decoration|Ivory Coast}} [[Ivory Coast]]
**[[Rally of the Republicans]] (RHDP)
**Led by President [[Alassane Ouattara]], in office since 4 December 2010.
**In power since 2010.
**[[2021 Ivorian parliamentary election|Parliamentary election, 2021]]: RHDP 137 of 255 seats.
**[[2025 Ivorian presidential election|Presidential election, 2025]]: Alassane Ouattara (RHDP) 91.23%
*{{flag|Mozambique}}{{Citation needed|date=July 2010}}
** [[FRELIMO|Mozambican Liberation Front]] (FRELIMO)
** Led by President [[Daniel Chapo]], in office since January 15, 2025
** In power since independence, June 25, 1975 (Sole legal party, 1975–1990)
** [[2024 Mozambican general election|Presidential election, 2024]]: Daniel Chapo (FRELIMO) 65.17%
** [[2024 Mozambican general election|Parliamentary election, 2024]]: FRELIMO 171 of 250 seats
*{{flag|Namibia}}<ref>{{Cite journal |last=Tötemeyer |first=Gerhard |date=December 10–12, 2007 |title=The Management of a Dominant Political Party system with particular reference to Namibia |url=https://library.fes.de/pdf-files/bueros/namibia/05913.pdf |journal=Friedrich Ebert Stiftung |quote=SWAPO Party being the dominant party in Namibia seized legitimate political power and thereby ending colonial rule on 21 March 2000. SWAPO Party's growth as dominant party was as follows…}}</ref>
** [[SWAPO|South West Africa People's Organisation]] (SWAPO)
** Led by President [[Netumbo Nandi-Ndaitwah]], in office since March 21, 2025
** In power since independence, March 21, 1990
** [[2024 Namibian general election|Presidential election, 2024]]: Netumbo Nandi-Ndaitwah (SWAPO) 58.07%
** [[2024 Namibian general election|Parliamentary election, 2024]]: SWAPO 53.37% and 51 of 96 seats
** [[2020 Namibian local and regional elections|Regional elections, 2020]]: SWAPO 88 of 121 seats
*{{flag|Nigeria}}
**[[Lagos State]]
***[[All Progressives Congress]] / [[Alliance for Democracy (Nigeria)|Alliance for Democracy]] has won every election in [[Lagos State]] since the end of military rule in Nigeria in 1999.
*{{flag|Rwanda}}{{Citation needed|date=July 2010}}
** [[Rwandan Patriotic Front]] (RPF)
** Led by President [[Paul Kagame]], in office since March 24, 2000
** In power since July 19, 1994
** [[2024 Rwandan general election|Presidential election, 2024]]: Paul Kagame (RPF) 99.18%
** [[2024 Rwandan general election|Parliamentary election, 2024]]: RPF 68.83% and 37 of 53 seats
*{{flag|South Sudan}}{{Citation needed|date=August 2012}}
** [[Sudan People's Liberation Movement]] (SPLM)
** Led by President [[Salva Kiir Mayardit]], in office since July 9, 2011; and was [[President of Southern Sudan]] since July 30, 2005
** In power since independence, July 9, 2011; and in the autonomous [[Government of Southern Sudan (2005–2011)|Government of Southern Sudan]] since formation, July 9, 2005
** [[2010 Sudanese general election|Presidential election, 2010]]: Salva Kiir Mayardit (SPLM) 92.99%
** Parliamentary election, 2010: SPLM 160 of 170 seats
**
*{{flag|Tanzania}}<ref>{{cite journal |last=O'Gorman |first=Melanie |date=April 26, 2012 |title=Why the CCM won't lose: the roots of single-party dominance in Tanzania |journal=[[Journal of Contemporary African Studies]] |volume=30 |issue=2 |pages=313–333 |doi=10.1080/02589001.2012.669566 |citeseerx=10.1.1.410.9369 |s2cid=17134713 }}</ref>
** [[Chama Cha Mapinduzi]] (CCM): Led by President [[Samia Suluhu Hassan]], in office since March 19, 2021
** In power, under various names, since independence, December 9, 1961 (Sole legal party, 1964–1992)
** [[2014 Tanzanian civic election|Civic election, 2014]]: CCM 74.50%
** [[2020 Tanzanian general election|Presidential election, 2020]]: [[John Magufuli]] (CCM) 84.40%
** [[2020 Tanzanian general election|Parliamentary election, 2020]]: CCM 350 of 393 seats (Includes 16 unelected representatives)
*{{flag|Togo}}{{Citation needed|date=July 2010}}
** [[Union for the Republic (Togo)|Union for the Republic]] (UNIR): Led by President [[Faure Gnassingbé]], in office since February 5, 2005
** In power since its formation in 2012
** [[2020 Togolese presidential election|Presidential election, 2020]]: Faure Gnassingbé (UNIR) 70.78%
** [[2024 Togolese parliamentary election|Parliamentary election, 2024]]: UNIR 108 of 113 seats
*{{flag|Uganda}}
** [[National Resistance Movement]] (NRM): Led by President [[Yoweri Museveni]], in office since January 29, 1986.
** In power as ''de facto'' dominant party since January 29, 1986, as a [[Non-partisan democracy|"non-party Movement."]]
** Became ''de jure'' dominant party with the return of multi-party elections on July 28, 2005.
** [[2021 Ugandan general election|Presidential election, 2021]]: [[Yoweri Museveni]] (NRM) 58.38%
** [[2021 Ugandan general election|Parliamentary election, 2021]]: NRM 41.60% and 336 of 529 seats
*{{flag|Zimbabwe}}{{Citation needed|date=July 2010}}
**[[Zimbabwe African National Union – Patriotic Front]] (ZANU-PF): Formerly led by President [[Robert Mugabe]], in office from April 18, 1980, to [[2017 Zimbabwean coup d'état|November 21, 2017]] (as president since December 31, 1987) and now led by [[Emmerson Mnangagwa]] since November 24, 2017. In power since independence, April 17, 1980
** [[2023 Zimbabwean general election|Presidential election, 2023]]: Emmerson Mnangagwa (ZANU-PF) 52.60%
** [[2023 Zimbabwean general election|Parliamentary election, 2023]]: ZANU-PF 56.18% and 177 of 280 seats
** [[2023 Zimbabwean general election|Senate election, 2023]]: ZANU-PF 33 of 80 seats (Includes 20 unelected representatives)

===Americas===
* {{flag|Antigua & Barbuda}}
** The [[Barbuda People's Movement]] has ruled the island of [[Barbuda]] since 1979, and has won every election for the island's seat in the national [[House of Representatives of Antigua and Barbuda|House of Representatives]] except for the [[2014 Antiguan general election|2014 election]], which it lost by one vote. 

* {{flag|Barbados}} 
** The [[Barbados Labour Party]] won every seat in the [[House of Assembly of Barbados|House of Assembly]] in the [[2018 Barbadian general election|2018]] and [[2022 Barbadian general election|2022 general election]]
** [[2022 Barbadian general election]]: [[Mia Mottley]]: 69.03%, 30 of 30 seats in the House of Assembly

*{{Flag|Brazil}}
**{{Flag|Bahia}}: the [[Workers' Party (Brazil)|Workers' Party]] has won every gubernatorial election since 2006.
*{{Flag|Canada}}
**{{Flag|Saskatchewan}}: Since 2007, the [[Saskatchewan Party]] has won a majority in every provincial general election.<ref>{{cite news |last1=Janani |first1=Whitfield |title=The Sask. Party has had a solid rural base for 17 years. Could health care be a disruptive force? |url=https://www.cbc.ca/news/canada/saskatchewan/sask-party-rural-vote-health-care-1.7358211 |access-date=October 10, 2025 |work=CBC News |date=October 23, 2024}}</ref>

* {{Flag|Costa Rica}}
** [[File:Bandera de Curridabat.svg|22px]] [[Curridabat (canton)|Curridabat]]: [[21st Century Curridabat]] has elected all [[Curridabat (canton)|Curridabat]] mayors since direct mayoral elections were introduced in Costa Rica in [[2002 Costa Rican municipal elections|2002]].

* {{flag|Dominica}}
** [[Dominica Labour Party]]: Led by [[Roosevelt Skerrit]] and [[Charles Savarin]]
** In power since 2000
** [[2022 Dominican general election]]: 82.38% and won 19 of 21 seats

*{{Flag|El Salvador}}
**[[Nuevas Ideas|New Ideas]]: Led by the president [[Nayib Bukele]], in power since 2019.
**[[2021 Salvadoran legislative election|2021 legislative]]: Nuevas Ideas won 56 of 84 seats
**[[2024 Salvadoran legislative election|2024 legislative]]: Nuevas Ideas won 54 of 60 seats
**[[2024 Salvadoran presidential election|2024 presidential]]: Nayib Bukele won with 84.65%

* {{flag|Mexico}}
** [[Morena (political party)|Morena (party)]] has been in power since 2018<ref>{{Cite web|title=PREP 2018|url=https://prep2018.ine.mx/#/presidencia/nacional/1/1/1/1|website=prep2018.ine.mx|access-date=2025-11-27}}</ref><ref>{{Cite web|title=Publicación|url=https://prep2024.ine.mx/|website=prep2024.ine.mx|access-date=2025-11-27|language=es}}</ref> both in the federal government and most of the states (24 out of 32 states, representing 74% of the population)<ref>{{Cite web|title=Morena y sus aliados serán gobierno en 24 entidades, en ellas vive 74% de la población|url=https://www.eleconomista.com.mx/politica/Morena-y-sus-aliados-seran-gobierno-en-24-entidades-donde-vive-74-de-la-poblacion-20240603-0108.html|website=El Economista|date=2024-06-03|access-date=2025-11-27|language=es|first=Diego|last=Badillo}}</ref>
** Since 2018, Morena and its allies have held a majority in both the [[Chamber of Deputies (Mexico)|chamber of deputies]] and the [[Senate of the Republic (Mexico)|senate]], growing to 29 out of 32 states going to Morena and its allies in the senate<ref>{{Cite web|title=Publicación|url=https://prep2024.ine.mx/|website=prep2024.ine.mx|access-date=2025-11-27|language=es}}</ref> and 256 out of 300 districts in the chamber of deputies<ref>{{Cite web|title=Publicación|url=https://prep2024.ine.mx/|website=prep2024.ine.mx|access-date=2025-11-27|language=es}}</ref> for the [[LXVI Legislature of the Mexican Congress|LXVI legislature]] running from september 2024 until august 2027
** In 2025, judges were voted into office with very low participation from the citizens as well as widespread reports of manipulation<ref>{{Cite web|title=¿Votaron más personas de las que podían? Las anomalías detectadas en el conteo de la elección judicial|url=https://www.infobae.com/mexico/2025/06/06/votaron-mas-personas-de-las-que-podian-las-anomalias-detectadas-en-el-conteo-de-la-eleccion-judicial/|website=infobae|date=2025-06-06|access-date=2025-11-27|language=es-ES|first=Por Anayeli Tapia Sandoval Seguir|last=en}}</ref><ref>{{Cite web|title=Recibe INE 29 denuncias en contra de los llamados “acordeones” o guías de votación a favor de candidaturas que contendieron en la elección judicial|url=https://52.203.79.230/2025/06/04/recibe-ine-29-denuncias-en-contra-de-los-llamados-acordeones-o-guias-de-votacion-a-favor-de-candidaturas-que-contendieron-en-la-eleccion-judicial/|website=Central Electoral|date=2025-06-04|access-date=2025-11-27|language=es|last=INE}}</ref>, many by the dominant party<ref>{{Cite web|title=Los ‘acordeones’ desatan más de 180 impugnaciones ante el Tribunal Electoral|url=https://elpais.com/mexico/2025-06-20/los-acordeones-desatan-mas-de-180-impugnaciones-ante-el-tribunal-electoral.html|website=El País México|date=2025-06-20|access-date=2025-11-27|language=es-MX|first=Elia Castillo|last=Jiménez}}</ref><ref>{{Cite web|title=Morenistas difunden acordeones para favorecer candidatos en la elección judicial|url=https://animalpolitico.com/elecciones-judiciales-2025/federales/morenistas-favorecen-candidatos-acordeones-voto|website=Animal Politico|date=2025-05-16|access-date=2025-11-27|language=es}}</ref>, which landed judges friendly with Morena into office.
** Morena currently holds ''de facto'' control over the legislative, judicial and executive powers in the vast majority of the country.
** The [[National Action Party (Mexico)|National Action Party]] (PAN) has dominated politics in the state of [[Guanajuato]] since 1991, winning every gubernatorial election since 1995.

* {{flag|Nicaragua}}
** [[Frente Sandinista de Liberacion Nacional|FSLN]]: Led by [[Daniel Ortega]]. Presidency since 2007 (and 1979–1990) mayor of every major city, including [[Managua]], majorities in most departments. 
** Local elections, 2012: 75.7% and 127 of 153 seats
** [[2021 Nicaraguan general election|General election, 2021]]: Daniel Ortega 75.9%
** National election, 2016: 66.8%
** Constituency election, 2016: 65.7%
** Central American Parliament, 2016: 68.6%

* {{flag|Paraguay}}
** The [[Colorado Party (Paraguay)|Colorado Party]] of [[Paraguay]], 1880–1904 and 1948–2008, and 2014 to the present day. They were the sole legal party from 1947 to 1962. They currently (as of 2025) control the executive and both chambers of Congress.

*{{flag|Venezuela}}
** [[United Socialist Party of Venezuela]] led [[Great Patriotic Pole]]: In power since 1999, led by [[Hugo Chavez]], then [[Nicolás Maduro]]
** [[2017 Venezuelan Constituent Assembly election]]: won 538 of 545 seats
** [[2017 Venezuelan regional elections]]: 52.7%
** [[2017 Venezuelan municipal elections]]: GPP 71.31% and won 306 of 365 seats
** [[2018 Venezuelan presidential election]]: Nicolás Maduro 67.8%
** [[2020 Venezuelan parliamentary election]]: GPP claimed 70% of the seats.
**As of 2025, the legislature, judiciary and executive are ''de facto'' controlled by Maduro's party.

===Asia and Oceania===

* {{Flag|Australia}}
** [[Australian Capital Territory]]: Since 2001, the [[Australian Labor Party]] has held government continuously in the ACT - sometimes in their own right, and sometimes in coalition with the [[Australian Greens]].<ref>{{Cite news |date=September 13, 2024 |title='It's become a bit one-sided': Antony Green says the ACT has fallen into a pattern of 'forever government'. So will anything change? |url=https://www.abc.net.au/news/2024-09-14/act-election-antony-green-forever-government-analysis/104347268 |access-date=October 29, 2024 |work=ABC News |language=en-AU}}</ref>
*{{anchor|Cambodia}}{{flag|Cambodia}}
** [[Cambodian People's Party]] (CPP): Led by former prime minister [[Hun Sen]], in office from 1985 to 2023
** In power since 1993 (sole legal party 1979–1992)
** [[2022 Cambodian communal elections]]: 99.46% and 11,510 of 11,572 councillors
** [[2018 Cambodian Senate election]]: 95.95% and 58 of 58 seats
** [[2023 Cambodian general election]]: 82.30% and 120 of 125 seats. 
*{{anchor|India}}{{flag|India}}
**[[Gujarat]]: Since 1998, the [[Bharatiya Janata Party]] has consecutively ruled the state legislature of Gujarat.
* {{flag|Indonesia}}
** {{flag|Bali}}: Dominated by the [[Indonesian Democratic Party of Struggle]] since 2003. The [[Indonesian Democratic Party of Struggle]] won gubernatorial elections in 2003, 2008, [[2018 Bali gubernatorial election|2018]], and [[2024 Bali gubernatorial election|2024]]
** {{flag|West Sumatra}}: The [[Prosperous Justice Party]] won every gubernatorial elections in 2010, [[2015 West Sumatra gubernatorial election|2015]], [[2020 West Sumatra gubernatorial election|2020]], and [[2024 West Sumatra gubernatorial election|2024]]
*{{flag|Malaysia}}
** {{flag|Kelantan}}: Led by [[Parti Islam Se-Malaysia]] (PAS) under various coalitions ([[Angkatan Perpaduan Ummah]], [[Barisan Alternatif]], [[Pakatan Rakyat]], [[Gagasan Sejahtera]], [[Perikatan Nasional]] (PN)) since 1990. PAS also lead the state government as a single party from 1955 to 1973 and as a component party of [[Barisan Nasional]] from 1973 to 1978, when they were expelled from BN in the aftermath of the [[1977 Kelantan Emergency]].<ref>{{cite web | url=https://www.malaysianbar.org.my/article/news/legal-and-general-news/general-news/kelantan-emergency-of-december-1977 | title=Kelantan Emergency of December 1977 - the Malaysian Bar }}</ref>
** {{flag|Pahang}}: Led by [[Barisan Nasional]] and its predecessor, [[Alliance Party (Malaysia)|Perikatan]] since 1955. Currently lead a coalition government with [[Pakatan Harapan]] after the [[2022 Pahang state election]].
** {{flag|Penang}}: Led by [[Pakatan Harapan]] and its predecessor, [[Pakatan Rakyat]] since 2008. Currently led a government coalition with Barisan Nasional after the 2023 state election. 
** {{flag|Sarawak}}: Led by [[Gabungan Parti Sarawak]] and its predecessors (BN Sarawak, Sarawak Alliance) since independence (1963). 
** {{flag|Selangor}}: Led by [[Pakatan Harapan]] and its predecessor, [[Pakatan Rakyat]] since 2008. Currently lead a government coalition with Barisan Nasional after the 2023 state election. 
** {{flag|Negeri Sembilan}}: Led by [[Pakatan Harapan]] since 2018. Currently lead a government coalition with Barisan Nasional after the 2023 state election.
** {{flag|Terengganu}}: Led by [[Malaysian Islamic Party|PAS]] under many coalitions (currently under [[Perikatan Nasional|PN]]), similar to Kelantan since [[2018 Terengganu state election|2018]]. The PN coalition won all seats in the state after the [[2023 Terengganu state election|2023 state election]].<ref>{{Cite web |date=August 12, 2023 |title=After clean sweep, PN now fully controls Terengganu at state and federal levels |url=https://theedgemalaysia.com/node/678446 |access-date=December 28, 2024 |website=The Edge Malaysia}}</ref>
* {{flag|Palestinian National Authority}} 
** [[Palestinian National Authority|West Bank Government]] ([[Fatah]]): Led by President [[Mahmoud Abbas]], in office since January 15, 2005 (as Chairman of the [[Palestine Liberation Organization|PLO]] since October 26, 2004) 
*** [[Oslo Accords|In power since 1994]]
*** [[2005 Palestinian presidential election]]: Mahmoud Abbas 62.52%
** [[Governance of the Gaza Strip|Gaza Strip Government]] ([[Hamas]]): Led by Chairman of the Political Bureau (acting) [[Khaled Mashal]], in office since October 16, 2024 (previously in July 31, 2024 – August 6, 2024, and 1996-6 May 2017)
*** [[Battle of Gaza (2007)|In power since 2007]]
*** [[2006 Palestinian legislative election]]: 74 of 132 seats and 44.45%
* {{flag|Singapore}}
** [[People's Action Party]] (PAP): Led by [[Prime Minister of Singapore|Prime Minister]] [[Lawrence Wong]], in office since May 15, 2024 (as Secretary-General since December 4, 2024) 
** In power since June 5, 1959<ref>{{cite web |url=http://www.eld.gov.sg/elections_past_parliamentary.html |title=Singapore Elections Department – Parliamentary Election Results |author=<!--Staff writer(s); no by-line.--> |access-date=September 9, 2015 |archive-url=https://web.archive.org/web/20150910073201/http://www.eld.gov.sg/elections_past_parliamentary.html |archive-date=September 10, 2015 }}</ref>
** [[2025 Singaporean general election|Parliamentary election, 2025]]: PAP won 65.57% of the popular vote and 87 out of 97 seats
** [[2023 Singaporean presidential election|Presidential election, 2023]]: Former PAP member [[Tharman Shanmugaratnam]] won 70.4% of the vote{{NoteTag|Presidents in Singapore are not allowed to belong to any party}}
* {{flag|Tajikistan}}{{Citation needed|date=July 2010}}
** [[People's Democratic Party of Tajikistan]] is headed by President [[Emomali Rahmon]]: In power since 1994 
** [[2020 Tajik presidential election|Presidential election, 2020]]: [[Emomali Rahmon]] 92.08%
** [[2020 Tajik parliamentary election|Parliamentary election, 2020]]: 47 of 63 seats in [[Supreme Assembly (Tajikistan)|Assembly of Representatives]]
* {{flag|Turkmenistan}}{{Citation needed|date=June 2013}}
** [[Democratic Party of Turkmenistan]] is headed by [[Kasymguly Babaev]] since August 18, 2013
** [[2022 Turkmenistan presidential election|Presidential election, 2022]]: [[Serdar Berdimuhamedow]] 72.97%
** [[2018 Turkmen parliamentary election|Parliamentary election, 2018]]: 55 of 125 seats in the [[Assembly of Turkmenistan]]
** In power since independence in 1990
** Sole legal party until 2012
* {{flag|Hong Kong}}{{Citation needed|date=August 2025}}
**Since [[Hong Kong's return to China]] on July 1, 1997, the [[pro-establishment|pro-China]] [[political parties]] have maintained a long-standing majority in the [[Legislative Council of Hong Kong|Legislative Council]] through the adoption of electoral systems such as [[Functional constituency (Hong Kong)|functional constituencies]]. The [[Democratic Alliance for the Betterment and Progress of Hong Kong]] (DAB) has consistently been the largest party in the Legislative Council. Since the 2021 imposition of the Decision of the National People's Congress on Improving the Electoral System of the Hong Kong Special Administrative Region "[https://zh.wikipedia.org/zh/%E5%85%A8%E5%9B%BD%E4%BA%BA%E6%B0%91%E4%BB%A3%E8%A1%A8%E5%A4%A7%E4%BC%9A%E5%85%B3%E4%BA%8E%E5%AE%8C%E5%96%84%E9%A6%99%E6%B8%AF%E7%89%B9%E5%88%AB%E8%A1%8C%E6%94%BF%E5%8C%BA%E9%80%89%E4%B8%BE%E5%88%B6%E5%BA%A6%E7%9A%84%E5%86%B3%E5%AE%9A Political System Reform" known as the "311 Decision]" by the Chinese central government, the pro-democracy camp [[pro-democracy]] has largely been screened out during the eligibility review process, ushering in an era of dominance for one faction in Hong Kong.
* {{flag|Macao}}{{Citation needed|date=August 2025}}
**Since the [[return of Macau]] to the motherland on December 20, 1999, [[Pro-Beijing camp (Macau)|pro-establishment]] groups have maintained a majority in the [[Legislative Assembly of Macau|Legislative Assembly]] through a combination of group elections and official appointments.

===Eurasia===

*{{flag|Azerbaijan}}
** [[New Azerbaijan Party]] (YAP) has been in power essentially continuously since 1993.
** [[2020 Azerbaijani parliamentary election|Parliamentary election, 2020]]: 72 of 125 seats
** [[2024 Azerbaijani presidential election|Presidential election, 2024]]: [[Ilham Aliyev]] 92.12%
*{{flag|Georgia}}<ref>{{cite journal |first=David |last=Aprasidze |first2=David S. |last2=Siroky |title=Technocratic Populism in Hybrid Regimes: Georgia on My Mind and in My Pocket |journal=Politics Gov. |volume=8 |issue=4 |year=2020}}</ref><ref>{{cite journal |first=Phillip |last=Oravec |first2=Edward C. |last2=Holland |title=The Georgian Dream? Outcomes from the Summer of Protest, 2018 |journal=Demokratizatsiya |volume=27 |issue=2 |year=2019 |pages=249–256}}</ref>
** [[Georgian Dream]] (GD) has been in power with an overall majority in Parliament since 2012. since 2020 the country has transformed fully into a dominant-party system, with opposition parties being heavily marginalized and weakened.
** [[2020 Georgian parliamentary election|Parliamentary election, 2020]]: 48.22% and 90 of 150 seats
** [[2018 Georgian presidential election|Presidential election, 2018]]: [[Salome Zourabichvili]] 59.5% (endorsed by GD, GD amended the constitution to abolish popular vote for the presidency by 2024<ref>{{cite web |url=https://dfwatch.net/understand-georgias-constitutional-reforms-look-beyond-president-48381 |title=To Understand Georgia's Constitutional Reforms, Look Beyond the President |website=Democracy & Freedom Watch |date=May 6, 2017 |access-date=January 7, 2023 |first=Joseph |last=Larsen |url-status=live |archive-url=https://web.archive.org/web/20170506194748/http://dfwatch.net/understand-georgias-constitutional-reforms-look-beyond-president-48381 |archive-date=May 6, 2017}}</ref>)
** [[List of municipalities in Georgia (country)|Municipality]] mayors: 65 of 65
*{{flag|Kazakhstan}}{{Citation needed|date=July 2010}}
** [[Amanat (political party)|Amanat]] 
** [[2016 Kazakh legislative election|Parliamentary election, 2016]]: 82.20% and 84 of 107 seats in the [[Majilis]]
** [[2022 Kazakh presidential election|Presidential election, 2022]]: [[Kassym-Jomart Tokayev]] 81.31%
*{{flag|Russia}}
** [[United Russia]]
*** Led by [[Dmitry Medvedev]] (president 2008–2012, prime minister 2012–2020)
*** In power since 2003
*** [[2024 Russian presidential election|Presidential election, 2024]]: [[Vladimir Putin]] 88.48% (endorsed by [[United Russia]] and several other parties, but ran as an independent)
*** [[2021 Russian legislative election|Parliamentary election, 2021]]: 49.82% and 324 of 450 seats
*** [[List of heads of federal subjects of Russia|Governors]]: 60 of 85
*{{flag|Turkey}}
** [[Justice and Development Party (Turkey)|Justice and Development Party]]
*** Led by [[Recep Tayyip Erdoğan]] (president 2014–present, prime minister 2003–2014)
*** In power since 2002
*** [[2023 Turkish presidential election|Presidential election, 2023]]: [[Recep Tayyip Erdoğan]] 52.18%
*** [[2023 Turkish parliamentary election|Parliamentary election, 2023]]: 35.61% and 268 of 600 seats

===Europe===
*{{Flag|Austria}}
** {{flag|Lower Austria}}
***[[Austrian People's Party]]: Led by [[Johanna Mikl-Leitner]], governor (since 2017); In power since 1945{{NoteTag|name=ÖVP|The predecessors of the ÖVP (the [[Christian Social Party (Austria)|Christian Social Party]]) ruled from 1907 until 1933 alone, with the help of the [[Fatherland Front (Austria)|Fatherland Front]] from 1933 until 1934, and the Fatherland Front ruled alone from 1934 until the [[Anschluss]] of 1938.}}
*** [[2023 Lower Austrian state election|State election, 2023]]: VPNÖ 39.93% and won 23 of 56 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 40.1%
*** [[2019 Austrian legislative election]]: ÖVP 42.3%
** {{flag|Tyrol}}
*** [[Austrian People's Party]]: Led by [[Anton Mattle]], governor (since 2022); In power since 1945
*** [[2022 Tyrolean state election|State election, 2022]]: TVP 34.71% and won 14 of 36 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 42.6%
*** [[2019 Austrian legislative election]]: ÖVP 45.8%
** {{flag|Vienna}}
*** [[Social Democratic Party of Austria]]: Led by [[Michael Ludwig]], [[List of mayors of Vienna|mayor]] (since 2018); In power since 1945{{NoteTag|The [[Social Democratic Party of Austria|SPÖ]] was previously the continuous ruling party of Vienna from 1919 until 1934, before being taken over by the [[Fatherland Front (Austria)|Fatherland Front]] and the 1938 [[Anschluss|Anschluss of Austria]].|name=SPÖ}}
*** [[2020 Viennese state election|State election, 2020]]: SPÖ 41.62% and won 46 of 100 seats
*** [[2019 Austrian legislative election]]: SPÖ 27.1%
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: SPÖ 30.3%
** {{flag|Vorarlberg}}
*** [[Austrian People's Party]]: Led by [[Markus Wallner]], governor (since 2011); In power since 1945
*** [[2019 Vorarlberg state election|State election, 2019:]] VVP 43.53% and won 17 of 36 seats
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 34.6%
*** [[2019 Austrian legislative election]]: ÖVP 36.6%
** {{flag|Upper Austria}}
*** [[Austrian People's Party]]: Led by [[Thomas Stelzer (born 1967)|Thomas Stelzer]], governor (since 2017); In power since 1945
*** [[2021 Upper Austrian state election|State election, 2021:]] OÖVP 37.61% and won 22 of 56 seats
*** [[2019 Austrian legislative election]]: ÖVP 36.8%
*** [[2019 European Parliament election in Austria|European Parliament election, 2019]]: ÖVP 35.1%
*{{Flag icon|Belarus}} [[Belarus]]
**[[Belaya Rus]] (PBR): founded in 2007 to support Lukashenko's presidency.
**In power since 2023.
**[[2024 Belarusian parliamentary election]]: BRB 51 of 110 seats.
*{{Flag|Estonia}}
** [[Estonian Reform Party]] has won all national and local elections in [[Tartu]], the second biggest city, since 1995. Holding mayor's position since 1996.
*{{Flag|Germany}}
** {{flag|Bavaria}}
***[[Christian Social Union in Bavaria]] (CSU): Led by [[Markus Söder]], [[List of Ministers-President of Bavaria|Minister-President]] (since 2018); In power since 1946, with a sole hiatus from 1954 to 1957. From 1966 to 2003 and 2013 to 2018, CSU ruled with an absolute majority. Its share of votes peaked in 1974 at 62%. From 2003 to 2008, CSU held a two-thirds supermajority in the Bavarian Landtag. Since the 2010s, the CSU's dominance has somewhat eroded (31.7% in the [[2021 German federal election]]; 37.2% in the [[2018 Bavarian state election]]), but it is still considered impossible to form a government led by another party in Bavaria. Even before 1946, Bavaria was already a dominant party system before the Third Reich dominated by the Bavarian People's Party (1918-1933), the Bavarian Centrist Party (1887-1918) and the Bavarian Patriot Party (1869-1887). 
**{{flag|Saxony}}
*** [[Christian Democratic Union of Germany|Christian Democratic Union]] (CDU):<ref>{{cite news |url=http://www.sueddeutsche.de/politik/landtagswahl-in-sachsen-cdu-sucht-nach-einem-neuen-partner-1.2108781 |title=CDU sucht nach einem neuen Partner |website=Sueddeutsche.de |date=August 31, 2014|last=Dresden|first=Cornelius Pollmer}}</ref> In power since the establishment of the state in 1990. CDU ruled with an absolute majority until 2004, and even a two-thirds supermajority in the Landtag from 1994 to 2004. Its popularity peaked at 56.9% in the 1999 election. In the 2010s, CDU's dominance eroded significantly. In the [[2017 German federal election]], Saxony's CDU came in second place for the first time in the history of the state, reaching 26.9%, behind the far-right [[Alternative für Deutschland]]. Due to the irreconcilability of left-wing and right-wing opposition parties, it is still considered impossible to form a state government led by another party than CDU.
**{{Flag|Brandenburg}}
***[[Social Democratic Party of Germany|Social Democratic Party]] (SPD):<ref>{{Cite web |title=Brandenburg election: Olaf Scholz's SPD narrowly beats AfD - exit polls |url=https://www.bbc.com/news/articles/c24315lrv18o |access-date=September 24, 2024 |website=www.bbc.com |date=September 22, 2024 |language=en-GB}}</ref> Led by [[List of minister-presidents of Brandenburg|Minister-President]] [[Dietmar Woidke]] (since 2013). In power since the state's establishment in 1990. currently. It won an absolute majority of seats in the [[Landtag of Brandenburg|Landtag]] and swept every single-member constituency in [[1994 Brandenburg state election|1994]], winning 54.1% of the vote. The SPD also swept all of Brandenburg's single-member constituencies in the [[2021 German federal election|2021 federal election]].
* {{flag|Hungary}}
** [[Fidesz–KDNP]]: In power since 2010 (won in the [[2009 European Parliament election in Hungary|European Parliament election, 2009]]: 14 of 22 of seats for Hungary)
** Led by [[Viktor Orbán]], [[Prime Minister of Hungary|prime minister]] (since 2010)
** [[2022 Hungarian parliamentary election]]: 54.13% and qualified majority, 135 of 199 seats
** [[2019 European Parliament election in Hungary|European Parliament election, 2019]]: 52.56% and 13 of 21 of seats for Hungary
* {{Flag|Italy}}
** {{flag|Emilia-Romagna}}
*** [[Democratic Party (Italy)|Democratic Party]]{{NoteTag|name=PD|Formerly its predecessors [[Italian Socialist Party|PSI]] (before 1924), [[Italian Communist Party|PCI]], [[Democratic Party of the Left|PDS]] and [[Democrats of the Left|DS]].}}: In power since 2007
*** [[2020 Emilia-Romagna regional election|Regional election, 2020]]: PD 34.7% and 23 of 50 seats
*** [[2024 European Parliament election in Italy|European Parliament election, 2024]]: PD 36.1% 
*** [[2022 Italian general election|Chamber of Deputies, 2022]]: PD 28.1%
** {{flag|Lombardy}}
*** [[Centre-right coalition (Italy)|Centre-right coalition]]: In power since 1994
*** [[2018 Lombard regional election|Regional election, 2018]]: CDX 56.27% and won 49 of 80 seats
*** Presidential election, 2018: Attilio Fontana 54.67%
*** [[2022 Italian general election|Chamber of Deputies election, 2022]]: CDX 50.6%
*** Senate election, 2018: CDX 50.4%
** {{flag|Tuscany}}
*** [[Democratic Party (Italy)|Democratic Party]]{{NoteTag|name=PD}}: In power since 2007
*** [[2015 Tuscan regional election|Regional election, 2015]]: PD 48.1%  and 25 of 41 seats
*** [[2014 European Parliament election in Italy|European Parliament election, 2014]]: PD 52.5% 
*** [[2018 Italian general election|Chamber of Deputies election, 2018]]: PD 29.6%
*** Senate election, 2018: PD 30.5%
** {{flag|South Tyrol}}
*** [[South Tyrolean People's Party]]: In power since 1948 (The [[Deutscher Verband|German Association]] dominated from 1921 and before that it was part of Tyrol)
*** [[1924 Italian general election]]: [[Deutscher Verband|German Association]], part of [[Lists of Slavs and Germans]] 80%
*** [[2013 Trentino-Alto Adige/Südtirol provincial elections#South Tyrol|Provincial elections, 2013]]: SVP 45.7% and 17 of 35 seats
*** [[2014 European Parliament election in Trentino-Alto Adige/Südtirol|European Parliament election, 2014]]: SVP 48.0% 
*** [[Italian general election, 2018 (Trentino-Alto Adige/Südtirol)|Chamber of Deputies election, 2018]]: SVP 48.8%
*** Senate election, 2018: SVP 49.8%
** {{flag|Veneto}}
*** [[Centre-right coalition (Italy)|Centre-right coalition]]: In power since 1994
*** Came in second place in Veneto to the [[Democratic Party (Italy)|Democratic Party]] in the [[2014 European Parliament election in Lombardy|European Parliament election, 2014]]: FI+LN+FdI 33.2%
*** [[2015 Venetian regional election|Regional election, 2015]]: CDX 52.2% and won 29 of 51 seats
*** Presidential election, 2015: Luca Zaia 50.1%
*** [[Italian general election, 2018 (Veneto)|Chamber of Deputies election, 2018]]: CDX 48.1%
*** Senate election, 2018: CDX 48.2%
* {{flag|Moldova}}
** {{flag|Transnistria|state}}
*** [[Political status of Transnistria|Self-declared state]]
*** [[Obnovlenie]]: In power since 2005
*** [[2020 Transnistrian parliamentary election|Parliamentary election, 2020]]: Renewal 27.79% and 29 of 33 seats
*** [[2016 Transnistrian presidential election|Presidential election, 2016]]: [[Vadim Krasnoselsky]], as independent candidate, 59.16%
* {{flag|Portugal}}
** {{flag|Madeira}}: the [[Social Democratic Party (Portugal)|Social Democratic Party]] has dominated political life in the [[Administrative divisions of Portugal#Autonomous regions|autonomous region]] of [[Madeira]] since the first regional elections, in 1976. [[Alberto João Jardim]] served as [[Presidents of the Regional Government of Madeira|President of the Regional Government]] uninterruptedly from 1978 to 2015.
*** [[2013 Portuguese local elections|Local elections, 2013]]: PSD 34.81%
*** [[2014 European Parliament election in Portugal|European Parliament election, 2014]] (in Madeira): PSD 31.0%
*** [[2015 Madeira regional election|Regional election, 2015]]: PSD 48.56% and 25 of 47 seats
*** [[2015 Portuguese legislative election]] (in Madeira): PSD 37.8% and 3 of 6 seats
* {{Flag|San Marino}}
** The [[Sammarinese Christian Democratic Party]] (PDCS) have always had a plurality of seats in the [[Grand and General Council]] since 1951, However it has not consistently formed the government. From 2016 to 2020 it was in opposition. The predecessor of the PDCS the [[Sammarinese People's Party]] was already biggest party in [[1920 Sammarinese general election|1920]].
** [[2019 Sammarinese general election|General election, 2019]]. PDCS 33.35%
* {{flag|Serbia}}
** [[Serbian Progressive Party]]: In power since 2012, led by [[Miloš Vučević]]
** [[2022 Serbian general election|Parliamentary election, 2022]]: SNS 44.27% and 120 of 250 seats
** [[2022 Serbian general election|Presidential election, 2022]]: [[Aleksandar Vučić]], 60.01%
** [[2020 Vojvodina provincial election]]: SNS 61.58% and 76 of 120
* {{flag|Spain}}
**{{flag|Basque Country}}
*** [[Basque Nationalist Party]], in power in the [[Basque Government]] from 1979 to 2009, and again since 2012.
*** [[2020 Basque regional election|Basque election, 2020]]: PNV 38.7%, 31 of 75 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Basque Country|Spanish Parliament election, November 2019]]: PNV 32.0%, 6 of 18 seats.
**{{flag|Castilla-La Mancha}}
*** [[Spanish Socialist Workers' Party]], in power in the [[Regional Government of Castile-La Mancha|Castilian-Manchegan Government]] from 1982 to 2011, and again since 2015.
*** [[2019 Castilian-Manchegan regional election|Castilian-Manchegan election, 2019]]: PSOE 44.1%, 19 of 33 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Castilla–La Mancha|Spanish Parliament election, November 2019]]: PSOE 33.1%, 9 of 21 seats.
**{{flag|Castile and León}}
*** [[People's Party (Spain)|People's Party]]{{NoteTag|name=People's Party|Formerly its predecessor [[People's Alliance (Spain)|People's Alliance]] (before 1989).}}, in power in the [[junta of Castile and León|Castile and León Government]] continuously since 1987.
*** [[2022 Castilian-Leonese regional election|Castilian-Leonese election, 2022]]: PP 31.4%, 31 of 81 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Castile and León|Spanish Parliament election, November 2019]]: PP 31.6%, 13 of 31 seats.
**{{flag|Community of Madrid}}
*** [[People's Party (Spain)|People's Party]], in power in the [[Government of the Community of Madrid]] continuously since 1995.
*** [[2021 Madrilenian regional election|Madrilenian election, 2021]]: PP 44.8%, 65 of 136 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Madrid|Spanish Parliament election, November 2019]]: PP 26.9%, 10 of 37 seats.
**{{flag|Galicia}}
*** [[People's Party (Spain)|People's Party]]{{NoteTag|name=People's Party|Formerly its predecessor [[People's Alliance (Spain)|People's Alliance]] (before 1989).}}, in power in the [[Xunta de Galicia|Galician Government]] from 1982 to 1987, from 1990 to 2005, and again since 2009.
*** [[2020 Galician regional election|Galician election, 2020]]: PP 47.6%, 41 of 75 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Galicia|Spanish Parliament election, November 2019]]: PP 31.9%, 10 of 23 seats.
* {{Flag|Ukraine}}
** {{flag|Kharkiv}}
***[[Kernes Bloc — Successful Kharkiv]] a party formed from members of the [[Party of Regions]], previously dominant in the [[Verkhovna Rada|Verkhovna Rada of Ukraine]], led by the [[List of mayors of Kharkiv|mayor]] of [[Kharkiv]] [[Hennadiy Kernes]], who was elected three times in a row in [[2020 Kharkiv local elections|elections]] with a result of more than 50% of the vote.<ref>{{Cite news |title=Геннадий Кернес, хозяин Харькова в инвалидном кресле |url=https://www.bbc.com/russian/features-55288508 |access-date=January 30, 2024 |work=BBC News Русская служба |language=ru}}</ref>
* {{flag|United Kingdom}}:
** {{flag|Wales}}: 
*** [[Welsh Labour]] has won the majority of seats to the [[House of Commons of the United Kingdom|House of Commons]] in Wales in every election since [[1922 United Kingdom general election|1922]]. 
***It has also been the largest party in the [[Senedd]] (formerly known as the National Assembly for Wales, until 2020) since its inception in [[1999 Welsh Assembly election|1999]].
** {{flag|London}}:
*** [[London Labour]] has won the majority of seats to the [[House of Commons of the United Kingdom|House of Commons]] in London in every election since [[1997 United Kingdom general election|1997]]. It has also been the largest party in the [[London Assembly]] for most of its existence with exception to 2008–12.
**{{flag|Scotland}}:
*** [[Scottish Labour]] won every election to the [[House of Commons of the United Kingdom|House of Commons]] in Scotland from [[1964 United Kingdom general election|1964]] to [[2015 United Kingdom general election in Scotland|2015]], where it was heavily defeated and reduced to 1 seat.<ref>{{Cite news |last1=Stacey |first1=Kiran |date=May 8, 2015 |title=SNP ends Labour domination in Scotland with election landslide |newspaper=Financial Times |url=https://www.ft.com/cms/s/2/f350d9ac-f4fa-11e4-8a42-00144feab7de.html#axzz3pFUtHHx8}}</ref> 
***It controlled the [[Scottish Parliament]] from its inception in [[1999 Scottish Parliament election|1999]] until the [[2007 Scottish Parliament election|2007 election]] where it lost to the [[Scottish National Party|SNP]].<ref>{{cite book |title=Scottish Politics |last=Cairney |first=Paul |author2=McGarvey, Neil |year=2013 |publisher=Palgrave Macmillan Limited |location=Houndmills |isbn=978-0-230-39046-1 |page=58 |url=https://books.google.com/books?id=ssqQmwEACAAJ }}</ref> It revived as the dominant party in Scotland in [[2024 United Kingdom general election in Scotland|2024]].

==Formerly dominant parties==
===North America===
*'''{{flag|Canada}}:''' 
**'''{{flag|Alberta}}:''' 
***The [[Progressive Conservative Association of Alberta]] (often referred to [[colloquially]] as the Progressive Conservative Party of Alberta or the Alberta PC Party) formed the provincial government, without interruption, from [[1971 Alberta general election|1971]] until the party's defeat in the [[2015 Alberta general election|2015 provincial election]].<ref name="List of MLAs">{{cite web|title=List of MLAs|url=http://www.albertapc.ab.ca/admin/contentx/default.cfm?h=10383&PageId=4|work=Pc Alberta|access-date=April 18, 2013|archive-date=April 18, 2013|archive-url=https://web.archive.org/web/20130418161428/http://www.albertapc.ab.ca/admin/contentx/default.cfm?h=10383&PageId=4|url-status=dead}}</ref> At 44 years, this was the longest unbroken run in government for a political party at the provincial or federal level in Canadian history.
***In 2017, the Alberta PC Party merged with Alberta's other major centre-right party, the [[Wildrose Party]], to become the [[United Conservative Party]] (UCP). The UCP has formed the provincial government since [[2019 Alberta general election|2019]], winning their second consecutive election in [[2023 Alberta general election|2023]].
**'''{{flag|Ontario}}:'''
***The [[Progressive Conservative Party of Ontario]] (known colloquially as the Ontario PC Party or simply as the "Tories") enjoyed a 43-year unbroken stretch as the party that formed the provincial government from 1943 to 1985. The party in particular was at its most powerful under the [[Red Tory]] principles of premier [[Bill Davis]] from 1971 to 1985; its dominance led the party to be nicknamed "The Big Blue Machine" during this era.
***The Ontario PC Party would regain power from 1995 to 2002 under [[Blue Toryism|Blue Tory]] premier [[Mike Harris]] and his brief successor [[Ernie Eves]], and has formed the provincial government since [[2018 Ontario general election|2018]] under [[Doug Ford]], winning elections in [[2022 Ontario general election|2022]] and [[2025 Ontario general election|2025]] as well.
*'''{{flag|Mexico}}:''' 
**The [[Institutional Revolutionary Party]] (PRI) and its predecessors Partido Nacional Revolucionario (PNR) (1929–1938) and Partido de la Revolución Mexicana (PRM) (1938–1946) in Mexico held the [[President of Mexico|presidency]] from [[1929 Mexican presidential election|1929]] to [[2000 Mexican general election|2000]]. The party governed all [[States of Mexico|states]] until 1989 and controlled both chambers of [[Congress of the Union|congress]] until 1997. As of 2023, the PRI has continued an uninterrupted hold of the governorship in one state: [[Coahuila]].
**The [[Liberal Party (Mexico)|Liberal Party]], later known as the National [[Porfirio Díaz|Porfirist]] Party, ruled consistently from 1867 to 1911. 
*'''Southern {{flag|United States}}:'''
** After [[Reconstruction era|Reconstruction]] through the [[Jim Crow era]], and until the 1990s in non-presidential elections, the South (usually defined as coextensive with the former [[Confederate States of America|Confederacy]]) was known as the "[[Solid South]]" due to its states' exceptionally reliable support of the [[Democratic Party (United States)|Democratic Party]], enabled in part by significant amounts of [[voter suppression]] and outright election subversion during Jim Crow.<ref>{{cite book |last1=Maxwell |first1=Angie |url=https://www.amazon.com/Long-Southern-Strategy-American-Politics-ebook/dp/B07RWP3D3V/ref=sr_1_1?keywords=the+long+southern+strategy&qid=1690421291&sprefix=the+long+sotuhern+%2Caps%2C107&sr=8-1 |title=The Long Southern Strategy: How Chasing White Voters in the South Changed American Politics |last2=Shields |first2=Todd |date=June 24, 2019 |publisher=Oxford University Press}}</ref><ref>{{Cite book |last1=Mickey |first1=Robert |url=https://www.amazon.com/Paths-Out-Dixie-Democratization-Authoritarian-ebook/dp/B007BOK3A0/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr= |title=Paths Out of Dixie: The Democratization of Authoritarian Enclaves in America's Deep South, 1944-1972 |date=February 19, 2015|publisher=Princeton University Press }}</ref><ref>{{cite web |last1=Trende |first1=Sean |title=Misunderstanding the Southern realignment |url=https://www.realclearpolitics.com/articles/2010/09/09/misunderstanding_the_southern_realignment_107084.html |website=Real Clear Politics}}</ref>

===Caribbean and Central America===
*'''{{flag|Antigua and Barbuda}}''': The [[Antigua Labour Party]] in Antigua and Barbuda, 1960–1971 and 1976–2004. They are currently ruling, but may not be yet considered dominant. 
*'''{{flag|Barbados}}''': The [[Barbados Labour Party]] in the [[Barbados]] from 1994 to 2008.They are currently ruling, but may not be yet considered dominant. The [[Democratic Labour Party (Barbados)|Democratic Labour Party]] from 1961 to 1976.
*'''{{flag|Bahamas}}''': The [[Progressive Liberal Party]] in the [[Bahamas]] from 1967 to 1992
*'''{{flag|Bermuda}}''': The [[United Bermuda Party]] in [[Bermuda]] from 1968 to 1998.

*'''{{flag|Costa Rica}}''':
**The [[National Republican Party (Costa Rica)|National Republican Party]] ruled Costa Rica between 1932 and 1948. 
**The [[National Liberation Party (Costa Rica)|National Liberation Party]] is often referred as the hegemonic or dominant party between 1953 and 1983 as it won most elections, it held the majority in the [[Legislative Assembly of Costa Rica|Legislative Assembly]] between 1953 and 1978, held consecutive governments several times and was only defeated in [[1958 Costa Rican general election|1958]], [[1966 Costa Rican general election|1966]] and [[1978 Costa Rican general election|1978]] thanks to the entire right-wing opposition nominating a common candidate in coalition. Only after 1983 with the merge of the [[Unity Coalition]] into the [[Social Christian Unity Party]] Costa Rica started its [[two-party system]].
**[[First Costa Rican Republic|Non-Partisan Liberals]] dominated Costa Rican presidency from 1846 to 1868.
** {{Flag|San José}}: [[Johnny Araya]] was the [[Mayor of San José, Costa Rica|Mayor of San Jose]] from 1998 to 2013 and from 2016 to 2024, both times almost entirely as a member of the [[National Liberation Party (Costa Rica)|National Liberation Party]].
*'''{{Flag|Dominican Republic}}''': The [[Blue Party (Dominican Republic)|Blue Party]] from 1879 to 1899. The [[Dominican Liberation Party]] from 2004 to 2020.
*'''{{Flag|El Salvador}}''': 
** The Liberal Party (PL) held the presidency from 1871 to 1918 (11 elections)
** The [[National Democratic Party (El Salvador)|National Democratic Party]] (PDN) [[Meléndez–Quiñónez dynasty|held the presidency]] from 1918 to 1927 (3 elections)
** The [[National Pro Patria Party]] (PNPP) held the presidency from 1933 to 1944 (3 elections)
** The [[Revolutionary Party of Democratic Unification]] (PRUD) held the presidency from 1950 to 1960 (2 elections)
** The [[National Coalition Party (El Salvador)|National Conciliation Party]] (PCN) held the presidency from 1962 to 1979 (4 elections)
** The [[Nationalist Republican Alliance]] (ARENA) held the presidency from 1989 to 2009 (4 elections)
*'''{{flag|Guatemala}}''': The [[Conservative Party (Guatemala)|Conservative Party]] in Guatemala from 1851 and 1871; the [[Liberal Party (Guatemala)|Liberal Party]] in Guatemala from 1871 and 1920, 1921 and 1926, 1931 and 1944.
*'''{{Flag|Honduras}}''': The [[National Party of Honduras|National Party]] in Honduras from 1933 to 1956, and again from 2010 to 2022.
*'''{{flag|Nicaragua}}''':
**The [[Partido Liberal Nacionalista]] of the [[Somoza family]] held effective control from the 1930s to 1979. It was never the sole legal party, but elections were often fraught with accusations of fraud and improbable results.
**[[Conservative Party (Nicaragua)|Conservative Party]] ruled from 1857 to 1893
*'''{{flag|Puerto Rico}}''': The [[Popular Democratic Party of Puerto Rico|Popular Democratic Party]] in [[Puerto Rico]] from 1949 to 1969.
* {{Flag|Saint Vincent|name=Saint Vincent and the Grenadines}}
**[[Unity Labour Party|Unity Labor Party]] ruled from 2001 to 2025
*'''{{Flag|Trinidad and Tobago}}''': [[People's National Movement]] ruled from 1956 to 1986.

===South America===
*'''{{flag|Argentina}}''': 
**The [[National Autonomist Party]] (PAN) of [[Argentina]] from 1874 to 1916.
**The [[Federalist Party (Argentina)|Federal Party]] from 1829 to 1852.
***'''{{flag|San Luis}}''': The conservative Liberal Democratic Party ruled the province between 1922 and 1943. The [[Justicialist Party]] has won every gubernatorial election between 1973 and 2019.
***'''{{flag|Neuquén}}''': [[Neuquén People's Movement]] has won every gubernatorial election since 1962 and until the [[2023 Argentine provincial elections|2023 gubernatorial election]].
***'''{{flag|Santa Cruz}}''': The Justicialist Party has won every gubernatorial election between 1973 and 2019.
*'''{{flag|Bolivia}}''': [[Liberal Party (Bolivia)|Liberal Party]] ruled from 1899 to 1920. The [[Revolutionary Nationalist Movement]] (MNR) in [[Bolivia]] from 1952 to 1964.

** [[Movimiento al Socialismo|Movement for Socialism (MAS)]] from 2006 to 2019 and from 2020 to 2025. 
** [[2020 Bolivian general election]]: [[Luis Arce]]: 55.10%, won 75 chamber seats and 21 senate seats
*'''{{flag|Brazil}}''': The [[National Renewal Alliance Party]] (ARENA) in Brazil from 1965 to 1979.
***{{Flag|São Paulo}}: has been dominated by the [[Brazilian Social Democracy Party]] since 1994, until election of [[Tarcísio de Freitas]] in [[2022 São Paulo gubernatorial election|2022]].
*'''{{Flag|Chile}}''': From 1829 to 1871, a successive number of parties ([[Pelucones]] to [[Conservative Party (Chile)|Conservative]] to [[National Party (Chile, 1857)|National Party]]) governed Chile. From 1990 to 2010 the [[Concertación]] Coalition hold presidency. 
*'''{{flag|Colombia}}''': The [[Colombian Liberal Party|Liberal Party]] of [[Colombia]] from 1861 to 1886, and later on from 1886 to 1900 as the brief successor party [[National Party (Colombia)|National Party]], and [[Colombian Conservative Party]] from 1900 to 1930
*'''{{Flag|Ecuador}}''': [[Ecuadorian Radical Liberal Party]] ruled from 1895 to 1925. [[PAIS Alliance]] ruled from 2007 to 2021.
*'''{{Flag|Guyana}}:''' The [[People's National Congress (Guyana)|People's National Congress]] from 1964 to 1992. The [[People's Progressive Party (Guyana)|People's Progressive Party]] from 1992 to 2015. 
*'''{{flag|Paraguay}}''': [[Liberal Party (Paraguay)|Liberal Party]] from 1912 to 1936
*'''{{flag|Uruguay}}''': The [[Colorado Party (Uruguay)|Colorado Party]] of [[Uruguay]], between 1865 and 1959
*'''{{Flag|Venezuela}}''': [[Conservative Party (Venezuela)|Conservative Party]] ruled from 1830 to 1851. [[Fifth Republic Movement]] ruled from 1999 until its merging with the newly created [[United Socialist Party of Venezuela]] in 2007, which has been the ruling party since then.

===Europe===
* '''{{Flag|Armenia}}''': The [[Republican Party of Armenia]] controlled the country from 1999 until 2018, when it lost all of its seats in parliament after the [[2018 Armenian revolution]] and the [[2018 Armenian parliamentary election|2018 parliamentary election]].
*'''{{flag|Austria}}''': The [[Austrian People's Party]] ruled as the dominant governing coalition leader from 1945 to 1970, and the [[Social Democratic Party of Austria]], under a similar arrangement, from 1970 to 2000.
**'''{{Flag|Austria-Hungary}}''': The [[List of ministers-president of Austria|Cisleithania Minister-Presidency]] was dominated by the [[Constitutional Party (Austria)|Constitutional Party]] from 1871 to 1893.  
***'''{{flag|Vienna}}''': The [[Social Democratic Workers' Party of Austria]] (predecessor of the SPÖ, in power since 1945), dominated Vienna between 1911 and 1934.
***'''{{flag|Lower Austria}}''': The [[Christian Social Party (Austria)|Christian Social Party]] (predecessor of the ÖVP, in power since 1945), dominated Lower Austria between 1907 and 1934.
***'''{{flag|Upper Austria}}''': The [[Christian Social Party (Austria)|Christian Social Party]] (predecessor of the ÖVP), dominated Upper Austria between 1907 and 1934.
***'''{{flag|Vorarlberg}}''': The [[Christian Social Party (Austria)|Christian Social Party]] (predecessor of the ÖVP), dominated Vorarlberg between 1907 and 1934.
***'''{{flag|Tyrol}}''': The [[Christian Social Party (Austria)|Christian Social Party]] (predecessor of the ÖVP), dominated Tyrol between 1907 and 1934.
***'''{{flag|Salzburg}}''': The Salzburger Volkspartei, the ÖVP and their predecessors dominated Salzburg between 1919 and 2004.{{NoteTag|name=OVP|The predecessors of the ÖVP are the [[Christian Social Party (Austria)|Christian Social Party]] ruled from 1907 to the renaming 1933 and the [[Fatherland Front (Austria)|Fatherland Front]] ruled from 1933 to the [[Anschluss]] 1938.}}
***'''{{flag|Styria}}''': The Steirische Volkspartei, the ÖVP and their predecessors dominated Styria between 1907 and 2005.{{NoteTag|name=OVP}}
*'''{{flag|Belgium}}''': The [[Catholic Party (Belgium)|Catholic Party]] sent prime ministers from 1884 to 1937. The [[Christen-Democratisch en Vlaams|Catholic People's Party]] sent prime ministers from 1979 to 1999.
**'''{{flag|Flanders}}''': The [[Christian Social Party (Belgium, defunct)|Christian Social Party]] and the [[Christen-Democratisch en Vlaams]] dominated Flanders from at least 1968 to 1999.
*'''{{Flag|Bulgaria}}''': [[GERB]] was the ruling party from 2009 to 2021 (with an exception from 2013 to 2014). It is the biggest Bulgarian party.
*'''{{flag|Croatia}}''': The [[Croatian Democratic Union]] was in power from the first multi-party elections in [[1990 Croatian parliamentary election|1990]], when Croatia was still a constituent republic of [[SFR Yugoslavia]], until it lost the [[2000 Croatian parliamentary election|parliamentary]] and [[2000 Croatian presidential election|presidential]] elections in 2000. For most of the 1990s, the party had an absolute majority in both the [[Parliament of Croatia|Chamber of Representatives]] and the [[Parliament of Croatia|Chamber of Counties]], while its chairman, [[Franjo Tuđman]], was [[President of Croatia]] under a ''de facto'' superpresidential system of government until his death in 1999.
*'''{{Flag|Denmark}}''': The [[National Landowners (Denmark)|National Landowners]], and later the [[Højre]], ruled Denmark from 1874 to 1901. 
*'''{{Flag|Estonia}}''': [[Estonian Centre Party]] has held the mayorship in [[Tallinn]] since 2005, having won a majority of the city council seats there four consecutive times. In 2021, they received 38 out of 79 seats and formed a coalition.
*'''{{Flag|Finland}}''': The Agrarian League, later the [[Centre Party (Finland)|Centre Party]], dominated the Presidency under [[Urho Kekkonen]] from 1956 to 1982.  
*'''{{Flag|France}}''': During the tenure of [[Napoleon III]] (first as president 1848 to 1852 then as Emperor from 1852 to 1870), the [[Bonapartism|Bonapartists]] were a loose ruling political organization.  Since the Fifth Republic, the main presidential parties, [[Les Républicains]] (centre-right) or the [[Parti Socialiste (France)|Parti Socialiste]] (centre-left), were the biggest parties in over half of the presidential elections, until both parties lost dominance in France since 2017, as centrist politician [[Emmanuel Macron]] of [[En Marche]] became president, with French right-wing leader [[Marine Le Pen]] as the main opponent. Both parties have taken dominance since the [[2017 French presidential election]].
*'''{{flag|Georgia}}''': The [[Union of Citizens of Georgia]] was the dominant political force from its establishment in 1995 to its dissolution and overthrow in 2003 in the [[Rose Revolution]], during which the party's leader and president, [[Eduard Shevardnadze]], was ousted. 
*'''{{flag|Germany}}''': The [[Christian Democratic Union of Germany|Christian Democratic Union]] ruled [[West Germany]] and later a unified Germany from its establishment in 1949 to 1969, and again from 1982 to 1998 and from 2005 to 2021. 
**'''{{flag|Baden-Württemberg}}''': The [[Christian Democratic Union of Germany]] ruled from 1953 to 2011 and was the biggest party until [[2016 Baden-Württemberg state election|2016]] (except in Württemberg-Baden for 1950–1952), but is still the biggest party at the German federal elections<ref>{{Cite web |url=https://www.wahlen-in-deutschland.de/buBawue.htm |title=Bundestagswahlen – Baden-Württemberg}}</ref> and European Parliament elections.<ref>{{Cite web |url=https://www.wahlen-in-deutschland.de/beBawue.htm |title=Wahlen zum Europäischen Parlament in Baden-Württemberg}}</ref> In the predecessor state of Baden, the Centre Party was the biggest party during the Weimar era until 1930.
**'''{{flag|Bavaria}}''': The Bavarian Patriot Party (until 1887), the [[Centre Party (Germany)|Centre Party]] (until 1918) and the [[Bavarian People's Party]] were the biggest parties in the Bavarian Landtag from 1869<ref>{{Cite web | url=https://www.wahlen-in-deutschland.de/klBayern.htm| title=Landtag Bayern 1869–1918}}</ref> to 1933 and ruled from 1920 to 1933.
**'''{{flag|Saar|LON}}''' ''(not part of Germany at the time)'': The [[Centre Party (Germany)|Centre Party]] won every Landesrat election from 1922 to 1935.
**'''{{flag|Saar Protectorate}}''' ''(not part of Germany at the time)'': The Saarland Christian People's Party held the majority from 1947 to 1955, which was broken by the similar CDU in 1955.
**'''{{flag|Saarland}}''': The [[Christian Democratic Union of Germany]] ruled from the return of the Saar to (West) Germany in 1959 to 1980. In the Landtag elections, the CDU reached between 36.6% in 1955 and 49.1% in 1975;<ref>{{Cite web |url=https://www.wahlen-in-deutschland.de/blSaar.htm |title=Landtagswahlen im Saarland seit 1945}}</ref> the CDU also dominated federal elections (except in 1972),<ref>{{Cite web |url=https://www.wahlen-in-deutschland.de/buSaarland.htm |title=Bundestagswahlen – Saarland}}</ref> and in the 1979 European Parliament election, the CDU/CSU won 46.4%.<ref>{{Cite web |url=https://www.wahlen-in-deutschland.de/beSaar.htm |title=Wahlen zum Europäischen Parlament im Saarland}}</ref>
**'''{{flag|Thuringia}}''': From the establishment of the state, the [[Christian Democratic Union of Germany]] ruled without interruption until 2014, with an absolute majority from 1999 to 2009. Since 2014, it has been in opposition.
*'''{{flag|Hungary}}'''
**'''{{flagcountry|Kingdom of Hungary (1867–1918)}}''': The [[Deák Party]] (which merged with the Left Centre to form the [[Liberal Party (Hungary)|Liberal Party]] in 1875) ruled Hungary from 1867 to 1905, and the [[National Party of Work]] between 1910 and 1918.<ref name="Bihari">{{cite book |last1=Bihari |first1=Mihály |title=Politológia: a politika és a modern állam: pártok és ideológiák |chapter=A magyarországi domináns pártrendszer |date=2013 |publisher=Nemzedékek Tudása Tankönyvkiadó |location=Budapest |isbn=978-963-19-7628-1 |pages=291–295 |language=hu}}</ref>
**'''{{flagcountry|Kingdom of Hungary (1920–46)}}''': The [[Unity Party (Hungary)|Unity Party]] and the [[Party of National Unity (Hungary)|Party of National Unity]] (renamed Party of Hungarian Life in 1939) governed the [[Kingdom of Hungary (1920–46)|Kingdom of Hungary]] from 1922 to 1944.<ref name="Bihari" />
**'''{{flagcountry|Second Hungarian Republic}}''': After the elected Prime Minister [[Ferenc Nagy]] was forced into exile in May 1947, the [[Hungarian Communist Party]] became the Hungary's ''de facto'' ruling party until formally declaring the country to be a [[Hungarian People's Republic|single-party state]] in August 1949.<ref>''[http://www.rev.hu/history_of_45/ora1/ora1_e.htm Part 2: Communist take-over, 1946–1949.]''  The Institute for the History of the 1956 Revolution.</ref>
*'''{{flag|Ireland}}''': Ireland's [[Fianna Fáil]] was the largest party in [[Dáil Éireann]] between 1932 and 2011 and in power for 61 of those 79 years. However, the party were heavily defeated in the [[2011 Irish general election]], coming third.
*'''{{flag|Italy}}''': Italy's [[Christian Democracy (Italy)|Christian Democracy]] dominated [[Politics of Italy|Italian politics]] for almost 50 years as the major party in every coalition that governed the country from 1944 until its demise amid [[Mani pulite|a welter of corruption allegations in 1992–1994]]. The main opposition to the Christian democratic governments was the [[Italian Communist Party]].
**'''[[File:Flag of Emilia-Romagna (de facto).svg|border|22px]] [[Emilia-Romagna]]''': The [[Italian Socialist Party]] dominated the region from 1909 until the rise of [[Fascism]].
**'''[[File:Flag of Emilia-Romagna (de facto).svg|border|22px]] [[Emilia-Romagna]]''': The [[Italian Communist Party]] dominated the region from 1946 until 1991.
**'''[[File:Flag of Emilia-Romagna (de facto).svg|border|22px]] [[Emilia-Romagna]]''': The [[Democratic Party of the Left]] dominated the region from 1991 until 1998.
**'''[[File:Flag of Emilia-Romagna (de facto).svg|border|22px]] [[Emilia-Romagna]]''': The [[Democrats of the Left]] dominated the region from 1998 until 2007.
**'''[[File:Flag of Tuscany.svg|22px]] [[Tuscany]]''': The [[Italian Communist Party]] dominated the region from 1946 until 1953, and then from 1963 until 1991.
**'''[[File:Flag of Tuscany.svg|22px]] [[Tuscany]]''': The [[Democratic Party of the Left]] dominated the region from 1991 until 1998.
**'''[[File:Flag of Tuscany.svg|22px]] [[Tuscany]]''': The [[Democrats of the Left]] dominated the region from 1998 until 2007. 
*'''{{Flag|Liechtenstein}}''': The [[Progressive Citizens' Party]] governed from 1928 to 1970.  
* '''{{flag|Luxembourg}}''': The [[Christian Social People's Party]] (CSV), with its predecessor, [[Party of the Right (Luxembourg)|Party of the Right]], governed Luxembourg continuously from 1915 to 2013, except for 1974–1979. However, Luxembourg has a coalition system, and the CSV has been in coalition with at least one of the other two leading parties for all but four years. It has always won a plurality of seats in parliamentary elections, although it lost the popular vote [[1964 Luxembourg general election|in 1964]] and [[1974 Luxembourg general election|1974]].
*'''{{Flag|Malta}}''': The [[Nationalist Party (Malta)|Nationalist Party]] dominated the Maltese political scene from [[1998 Maltese general election|1988]] to 2013, when the [[Labour Party (Malta)|Labour Party]] won the government in the 2013 [[2013 Maltese general election|general election]].
*'''{{Flag|Monaco}}''': [[Rally & Issues]] governed the National Assembly from 1962 to 2003. 
* '''{{Flag|Montenegro}}''': The [[Democratic Party of Socialists of Montenegro|Democratic Party of Socialists]] (DPS) ruled Montenegro from 1990 to 2020, having been defeated in the [[2020 Montenegrin parliamentary election|2020 election]]. 
*'''{{flag|Norway}}''': The [[Norwegian Labour Party]] ruled from 1935 to 1965 (including the 5 years of [[Nygaardsvold's Cabinet|Government-in-exile]] during [[World War II]]), though it has been the biggest party in [[Norway]] since 1927 and has been in power many other times.
*'''{{flag|Poland}}''': The [[Law and Justice]] party (PiS) won the majority of seats in the [[Sejm]] and formed governments in [[2015 Polish parliamentary election|2015]] and [[2019 Polish parliamentary election|2019]], while also winning the Presidency in [[2015 Polish presidential election|2015]] and [[2020 Polish presidential election|2020]]. After the [[2023 Polish parliamentary election|2023 Parliamentary election]], they lost the majority in the Sejm and failed to establish a government coalition.
*'''{{flag|Portugal}}''': 
**The [[Portuguese Republican Party]], during most of the [[Portuguese First Republic]]'s existence (1910–1926): After the coup that put an end to [[Kingdom of Portugal|Portugal's constitutional monarchy]] in 1910, the electoral system, which had always ensured victory to the party in government, was left unchanged. Before 1910, it had been the [[Portuguese monarchy|reigning monarch]]'s responsibility to ensure that no one party remain too long in government, usually by disbanding Parliament and calling for new elections. The republic's constitution added no such proviso, and the Portuguese Republican Party was able to keep the other minor republican parties (monarchic parties had been declared illegal) from winning elections. On the rare occasions when it was ousted from power, it was overthrown by force, and it was again by the means of a counter-coup that it returned to power, until its final fall, with the republic itself, in 1926.
**The [[Social Democratic Party (Portugal)|Social Democratic Party]] dominated several Portuguese governments between 1980 and 1995, with the exception of the governing coalition with the [[Socialist Party (Portugal)|Socialist Party]] between 1983 and 1985.
**As a [[Semi-presidential system|semi-presidential republic]], Portugal's [[President of Portugal|President]] has significant residual power. From 1986 to 2006, the Presidency was in the hand of the [[Socialist Party (Portugal)|Socialist Party]]; since 2006, it is the [[Social Democratic Party (Portugal) | Social Democratic Party]] that currently controls the Presidency.
*{{flag|South Ossetia}}
**[[United Ossetia]], led by [[Anatoliy Bibilov]], has been power since 2014 (a continuation of the governing 2001–2014 [[Unity Party (South Ossetia)|Unity Party]], now defunct). It won the [[2014 South Ossetian parliamentary election|parliamentary election in 2014]] with 44.84% of the vote and 20 of 34 seats, and won again in the [[2017 South Ossetian presidential election|2017 Presidential election]] with 54.80% of the vote.

* '''{{Flag|Serbia}}''': The dominant party in Serbia is the [[Serbian Progressive Party]] led by Aleksandar Vučić. The party has won all parliamentary and presidential elections since 2012 and rules in almost all municipalities and cities in the country.<ref>{{Cite web |last=Portal |first=BUKA |date=June 22, 2020 |title=SNS dominacija na lokalu, pali Šabac i Paraćin, traži se ponavljanje izbora u Šapcu {{!}} 6yka |url=https://6yka.com/region/sns-dominacija-na-lokalu-pali-sabac-i-paracin-trazi-se-ponavljanje-izbora-u-sapcu/ |access-date=April 7, 2025 |website=6yka.com |language=bs-BA}}</ref>
**{{Flag|Kingdom of Serbia}}: [[People's Radical Party]], led by [[Nikola Pašić]], dominated the political landscape of the Kingdom of Serbia from 1904 and 1918. Pašić also served as the [[Prime Ministers of the Kingdom of Yugoslavia|Prime Minister of the Kingdom of Yugoslavia]] from 1918 to 1926 with brief interruptions.<ref>{{Cite web |date=December 15, 2017 |title=Народна радикална странка |url=http://srpskaenciklopedija.org/doku.php?id=%D0%BD%D0%B0%D1%80%D0%BE%D0%B4%D0%BD%D0%B0_%D1%80%D0%B0%D0%B4%D0%B8%D0%BA%D0%B0%D0%BB%D0%BD%D0%B0_%D1%81%D1%82%D1%80%D0%B0%D0%BD%D0%BA%D0%B0 |access-date=April 7, 2025 |website=Српска енциклопедија |language=sr}}</ref>
**{{flag|FR Yugoslavia}}: The [[Socialist Party of Serbia]] controlled the country from 1992 to 2000.
*'''{{flag|Spain}}'''
**'''{{flag|Andalusia}}''': The [[PSOE-A]] party (the Andalusian branch of nationwide [[PSOE]]) was the ruling party in the [[Andalusian Autonomous Government]] continuously between 1978 and 2019, being also the most voted party in all elections for the [[Parliament of Andalusia]] during that interval, except one ([[2012 Andalusian regional election|2012]]). After the [[2018 Andalusian regional election|2018 Andalusian election]], a right-to-centre coalition led by the [[People's Party (Spain)|People's Party]] entered office, and in [[2022 Andalusian regional election|2022]] the People's Party achieved an absolute majority.
**'''{{flag|Catalonia}}''': The [[Convergence and Union]] coalition (federated political party after 2001) in [[Catalonia]] governed the [[Generalitat of Catalonia|autonomous Catalan government]] from 1980 to 2003, under the leadership of [[Jordi Pujol]], with parliamentary absolute majority or in coalition with other smaller parties. The party later governed again from 2010 until its dissolution in 2015.
**{{flag|Extremadura}}
*** [[Spanish Socialist Workers' Party]], in power in the [[junta of Extremadura|Extremaduran Government]] from 1983 to 2011, and again since 2015.
*** [[2019 Extremaduran regional election|Extremaduran election, 2019]]: PSOE 46.8%, 34 of 65 seats.
*** [[Results breakdown of the November 2019 Spanish general election (Congress)#Extremadura|Spanish Parliament election, November 2019]]: PSOE 38.3%, 5 of 10 seats.
**'''{{flag|Valencian Community}}''': The [[People's Party of the Valencian Community]] (the Valencian branch of nationwide [[People's Party (Spain)|People's Party]]) was the ruling party in the [[Generalitat Valenciana|Valencian Autonomous Government]] between 1995 and 2015, being the most voted party in all  elections for the [[Valencian Parliament]] during that interval. After the [[2015 Valencian regional election|2015 Valencian elections]], a left-to-centre coalition entered office.
*'''{{Flag|Switzerland}}''': From 1848 to 1891, the [[Free Democratic Party of Switzerland|Free Democratic Party]] held all seven seats of the [[Federal Council (Switzerland)|Federal Council]], thus having full control of the Swiss Directorial Government.
*'''{{flag|Sweden}}''': The [[Swedish Social Democratic Party]] in Sweden governed from 1932 to 2006, except for some months in 1936 (1936–1939 and 1951–1957 in coalition with the [[Centre Party (Sweden)|Farmers' League]], 1939–1945 at the head of a government of national unity), 1976–1982 and 1991–1994. The party is still the largest party in Sweden and has been so in every general election since 1917 (hence the largest party even before the universal suffrage was introduced in 1921). The former prime minister and party leader [[Tage Erlander]] led the Swedish government for an uninterrupted tenure of 23 years (1946–1969), the longest in any democracy so far. Since 2006, the party support has declined, but in 2014, it returned to government, although its centre-left coalition had no majority.
*'''{{flag|Turkey}}''': In [[Turkey]]'s single-party period lasting until 1945, the [[Republican People's Party]] (CHP) was the major political organisation of the single-party state. However, the CHP faced two opposition parties during this period, both established upon the request of the founder of the Republic of Turkey and CHP leader, [[Mustafa Kemal Atatürk]], in efforts to allegedly jump-start multiparty democracy in Turkey.<ref>{{Cite web |url=http://www.utoronto.ca/ai/learningtolose/participants.html |title = Learning to Lose: Adapting to Democracy in One Party Dominant Systems… |archive-url=https://archive.today/20140604202006/http://www.utoronto.ca/ai/learningtolose/participants.html |archive-date=June 4, 2014 }}</ref> The pro-Kurdish [[Peoples' Democratic Party (Turkey)|Peoples' Democratic Party]]{{NoteTag|Formerly its predecessors [[People's Labor Party]] (with [[Social Democratic Populist Party (Turkey)|SHP]]), [[People's Democracy Party]], [[Democratic People's Party (Turkey)|Democratic People's Party]], [[Thousand Hope Candidates]] and [[Labour, Democracy and Freedom Bloc]].}} was the dominant party in the mainly Kurdish southeast from 1991 until the [[2016 Turkish coup d'état attempt]] which resulted in [[2016–present purges in Turkey|massive purges]] and the takeover of municipalities by the state. The landslide election victories of the [[Justice and Development Party (Turkey)|Justice and Development Party]] led to the party gaining majority in parliament between 2002 and 2018.<ref>{{cite web|date=January 19, 2012|title=Turkey Under the AKP: The Era of Dominant-Party Politics|url=http://www.journalofdemocracy.org/article/turkey-under-akp-era-dominant-party-politics|access-date=May 30, 2015|work=journalofdemocracy.org}}</ref> Since the [[2018 Turkish parliamentary election|2018 parliamentary election]], the party has minority in the parliament.<ref>{{cite news |title=Turkey's undecided voters are leaning towards opposition alliance |url=https://ahvalnews.com/nation-alliance/turkeys-undecided-voters-are-leaning-towards-opposition-alliance |access-date=April 8, 2022 |date=June 10, 2021}}</ref>
*'''{{flag|United Kingdom}}''': 
**The [[Whigs (British political party)|Whigs]] dominated the [[Kingdom of Great Britain]]'s politics from 1714 to 1762 during the [[Whig supremacy]].
**The [[Tories (British political party)|Tories]], governed from 1783 to 1806, and 1807 to 1830.
**The [[Liberal Party (UK)|Liberal Party]] governed from 1905 to 1922.
**The [[Conservative Party (UK)|Conservative Party]], governed from 1895 to 1905, and from 1935 to 1945, and from 1951 to 1963, and from 1979 to 1997, and lastly from 2010 to 2024.
**The [[Labour Party (UK)|Labour Party]] governed from 1997 to 2010.
**'''{{flag|Northern Ireland}}''':
***The [[Ulster Unionist Party]] won every election between 1921 and 1972 in the [[Parliament of Northern Ireland|former devolved administration]] of [[Northern Ireland]].<ref>{{cite book |title=Exploring British Politics |last=Garnett |first=Mark |author2=Lynch, Philip |year=2007 |publisher=Pearson Education |location=London |isbn=978-0-582-89431-0 |page=322 |url=https://books.google.com/books?id=-YI5u5PlHgQC }}</ref>
** {{flag|Scotland}}: 
*** The [[Scottish National Party]] has been the largest party in the [[Scottish Parliament]] since [[2007 Scottish Parliament election|2007]]. It also won the majority of seats to the [[House of Commons of the United Kingdom|House of Commons]] in Scotland in every election from [[2015 United Kingdom general election in Scotland|2015]] until it lost to [[Scottish Labour]] in [[2024 United Kingdom general election in Scotland|2024]].

===Asia===
*'''{{flag|Afghanistan|1978}}''': In [[Democratic Republic of Afghanistan|Afghanistan]], the [[People's Democratic Party of Afghanistan]] was the only legal political party from 1978 until 1987 when other parties were allowed while the PDPA remained the dominant political party until 1992.
*'''{{flag|Bangladesh}}''': In [[Bangladesh]], the [[Awami League]] was the country's predominant political party between 1972 and 1975 and from 2009 to 2024. After the [[Assassination of Sheikh Mujibur Rahman|military coup of 1975]], the [[Bangladesh Nationalist Party]] (BNP) became the dominant political force between 1977 and 1982. Under the autocratic regime of General [[Hussain Muhammad Ershad]], the [[Jatiya Party (Ershad)|Jatiya Party]] was the dominant party between 1986 and 1990. Bangladesh Awami League again became the dominant political party in 2008 and ended in 2024 after [[Sheikh Hasina]]'s resignation amid the [[Student–People's uprising|2024 Bangladesh protests]].
*'''{{flag|Burma|1948}}''': The [[Anti-Fascist People's Freedom League]] in Burma (now Myanmar) from 1948 to 1962. The [[Union Solidarity and Development Party]] from 2011 to 2016 (as a [[State Peace and Development Council|military junta]] from 1988 to 2011).
*'''{{flag|Cambodia}}''': The [[Democratic Party (Cambodia)|Democratic Party]] was the dominant party in Cambodia from 1946 to 1955, The [[Sangkum]] in Cambodia was the dominant party under Prince [[Norodom Sihanouk]] as head of government from 1955 to 1970. Under the [[Khmer Republic]] the [[Social Republican Party]] was the dominant party under General [[Lon Nol]] from 1972 to 1975.
*'''{{flag|Republic of China}}''': The [[Kuomintang]] established a ''de facto'' [[Dang Guo|one-party state]] in the [[Republic of China (1912–1949)|Republic of China on the mainland]] and subsequently on [[Taiwan]] until political liberalization and the lifting of [[martial law in Taiwan|martial law]] in the late 1980s. The Kuomintang continued to dominate the political system until the victory of the opposition [[Democratic Progressive Party]] in the [[2000 Taiwanese presidential election|2000 presidential election]]. The Kuomintang maintained control of the [[Legislative Yuan]] until [[2016 Taiwanese legislative election|2016]].
*'''{{Flag|India}}:''' The [[Indian National Congress]] had continuously ruled the [[parliament of India]] and various [[State legislature (India)|state legislatures]] since independence in 1947 to 1977 and 1980 to 1989.
**'''[[Odisha]]''': The [[Biju Janata Dal]] had ruled the [[Odisha Legislative Assembly|state legislature of Odisha]] for 24 years (winning election for five consecutive times from 2000 to 2024).
**'''[[Sikkim]]:''' The [[Sikkim Democratic Front]] had ruled the [[Sikkim Legislative Assembly|state legislature of Sikkim]] for 24 years (winning election for five consecutive times from 1994 to 2019).
**'''[[Tripura]]:''' The [[Left Front (Tripura)|Tripura Left Front]], comprising parties such as the [[Communist Party of India (Marxist)]], the [[Communist Party of India]], [[All India Forward Bloc]] and the [[Revolutionary Socialist Party (India)|Revolutionary Socialist Party]] had ruled the [[Tripura Legislative Assembly|state legislature of Tripura]] for 24 years (winning election for five consecutive times from 1993 to 2018).
**'''[[West Bengal]]:''' The [[Left Front (West Bengal)|West Bengal Left Front]], comprising parties such as the [[Communist Party of India (Marxist)]], the [[Communist Party of India]], [[All India Forward Bloc]] and the [[Revolutionary Socialist Party (India)|Revolutionary Socialist Party]] had ruled the [[West Bengal Legislative Assembly|state legislature of West Bengal]] for 34 years (winning election for seven consecutive times from 1977 to 2011).<ref>{{Cite web|last=Democracy|first=Peoples'|date=June 24, 2007|title=West Bengal: How The Left Front And Its Government Emerged|url=http://archives.peoplesdemocracy.in/2007/0624/06242007_biman%20basu.htm|archive-url=https://web.archive.org/web/20170815214713/http://archives.peoplesdemocracy.in/2007/0624/06242007_biman%20basu.htm|archive-date=August 15, 2017}}</ref> 
*'''{{flag|Indonesia}}''': The [[Golkar]] (acronym of ''Golongan Karya'' or Functional Groups) organization, in power from 1971 to 1999 in support for [[Suharto|President Suharto]].
** {{flag|Central Java}}: Dominated by the [[Indonesian Democratic Party of Struggle]] since 2003. Led by [[Indonesian Democratic Party of Struggle]] politicians during 2003-2023
** {{flagicon image|City Flag of Depok.svg}} [[Depok]] City: Led by [[Prosperous Justice Party]] politicians during 2005-2025
*'''{{flag|Iran|1964}}''': The [[Iran Novin Party]] dominated Iran's [[Islamic Consultative Assembly|parliament]], [[Cabinet of Iran|cabinet]], and local councils from 1964 until Iran became a one-party state in 1975.
*'''{{flag|Israel}}''': [[Mapai]] in Israel was the dominant party from the establishment of the state of Israel in 1948 (and before 1944 they won the [[Assembly of Representatives (Mandatory Palestine)|Assembly of Representatives]] since 1925) until merging into present-day [[Israeli Labor Party]] in 1968. The Labor Party started losing influence in the 1970s, particularly following the [[Yom Kippur War]], and eventually lost power in the [[1977 Israeli legislative election|1977 election]]. The Labor Party continued to participate in several coalition governments until 2009.
*'''{{flag|Japan}}''': [[Liberal Democratic Party (Japan)|Liberal Democratic Party]] (LDP), in power [[1955 System|1955–1993]], 1996–2009 and since 2012. After the [[2024 Japanese general election]], LDP no longer has a majority in the [[House of Representatives (Japan)|House of Representatives]], while in the [[2025 Japanese House of Councillors election]], it lost its majority in the [[House of Councillors]].
*'''{{flag|South Korea}}''': [[Conservatism in South Korea|Conservative parties]]: [[Liberal Party (South Korea)]] in power 1948–1960, [[Democratic Republican Party (South Korea)]] in power 1962–1980, [[Democratic Justice Party]] in power 1980–1990, [[Democratic Liberal Party (South Korea)]] in power 1990–1995, [[New Korea Party]] in power 1995–1997 and [[Saenuri Party]] in power 2008–2017.
*'''{{flag|Malaysia}}''': [[Barisan Nasional]] (BN), in power from 1974 to 2018, defeated in [[2018 Malaysian general election|2018 election]]. Also in a coalition government with [[Perikatan Nasional]] from 2020 to 2022 in the wake of [[2020 Malaysian political crisis]], with BN leading from 2021 to 2022. Its predecessor [[Alliance Party (Malaysia)|Perikatan]] also held power from 1955 to 1973. After the [[2022 Malaysian general election]], despite currently in a coalition government led by [[Pakatan Harapan]], BN is no longer dominant in the Malaysian politics.
**'''{{flag|Johor}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1954 to 2018, defeated in 2018 election. Regained power in the wake of [[2020 Malaysian political crisis]] and won the [[2022 Johor state election]].
**'''{{flag|Kedah}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1955 to 2008, defeated in 2008 election. Regained power in the 2013 state elections, but defeated again in the [[2018 Kedah state election|2018 election]].
**'''{{flag|Kelantan}}''': Barisan Nasional, in power from 1978, when they won the [[1978 Malaysian state elections#Kelantan|1978 state election in Kelantan]] and governed in a coalition with [[Pan-Malaysian Islamic Front|BERJASA]], until 1990, when BN were defeated in [[1990 Malaysian state elections#Kelantan|that year's election]].
**'''{{flag|Melaka}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1955 to 2018, defeated in 2018 election. Regained power in the wake of [[2020 Malaysian political crisis]] and won the [[2021 Melaka state election]].
**'''{{flag|Negeri Sembilan}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1955 to 2018, defeated in 2018 election. Currently BN is in a government coalition led by [[Pakatan Harapan]] after the 2023 state election. 
**'''{{flag|Penang}}''': Barisan Nasional, in power from 1974 to 2008 under main component party in Penang [[Parti Gerakan Rakyat Malaysia|Gerakan]], defeated in 2008 election. Gerakan as a single party also won state election in 1969, winning it from BN predecessor Perikatan, who held power in the state from 1955.
**'''{{flag|Perak}}''': Barisan Nasional, in power from 1974 to 2008, defeated in 2008 election. BN regained power in 2009 as a result of [[2009 Perak constitutional crisis]], and won the 2013 Perak state election. BN would lose the Perak government again after defeat in the 2018 state election, but regained power in the wake of [[2020 Malaysian political crisis]]. Its predecessor [[Alliance Party (Malaysia)|Perikatan]] also held power from 1955 to 1969. Currently lead a coalition government with [[Pakatan Harapan]] after the [[2022 Perak state election]].
**'''{{flag|Perlis}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1955 to 2022, defeated in [[2022 Perlis state election|2022 election]].<ref>{{Cite web|url=https://www.astroawani.com/berita-malaysia/ge15-pn-win-14-state-seats-perlis-form-government-392648|title=GE15: PN win 14 state seats in Perlis to form government|work=[[Bernama]]|date=November 20, 2022|access-date=November 23, 2022|publisher=[[Astro Awani]]}}</ref> 
**'''{{flag|Sabah}}''': Barisan Nasional, in power from 1976 to 1985 (led by component party [[Sabah People's United Front|BERJAYA]]), 1986 to 1990 (led by component party [[United Sabah Party|PBS]]), and from 1994 to 2018 (led by component party [[United Malay National Organization|UMNO Sabah]]). Currently BN is in a coalition government with [[Gabungan Rakyat Sabah]] (GRS), after the [[2020 Sabah state election]]. PBS also led the state government as a single party from 1985 to 1986, and as part of [[Gagasan Rakyat]] coalition from 1990 to 1994. Before BN, [[Alliance Party (Malaysia)|Perikatan Sabah]] (Sabah Alliance) holds power in Sabah from its independence in 1963 to 1976.
**'''{{flag|Selangor}}''': Barisan Nasional, in power from 1974 to 2008, defeated in 2008 election. Its predecessor Perikatan also held power from 1955 to 1969. 
**'''{{flag|Terengganu}}''': Barisan Nasional (and its predecessor Perikatan), in power from 1955 to 2018, with exception to 1959–1961 and 1999–2004, when the state government were controlled by [[Parti Islam Se-Malaysia]] (PAS). Defeated in the [[2018 Terengganu state election|2018 election]].
*'''{{Flag|Northern Cyprus}}''': The [[National Unity Party (Northern Cyprus)|National Unity Party]] governed from 1983 to 2005. 
*'''{{flag|Philippines|1986}}''': The [[Nacionalista Party (Philippines)|Nacionalista Party]] in the [[Philippines]] was the dominant party during various times in the nation's history from [[4th Philippine Legislature|1916]]–[[2nd National Assembly of the Philippines|1941]], and on [[1st Congress of the Commonwealth of the Philippines|1945]]. From [[Interim Batasang Pambansa|1978]] to [[Regular Batasang Pambansa|1986]] [[Kilusang Bagong Lipunan]] operated as a dominant party. 
*'''{{Flag|Sri Lanka}}''': The [[United National Party]] from 1977 to 1994, and the [[Sri Lanka Freedom Party]] from 1994 to 2015 (except for a brief interregnum from 2001 to 2004).
*'''{{Flag|Syria}}''': The [[Arab Socialist Ba'ath Party – Syria Region|Syrian Arab Socialist Ba'ath Party]] ruled from 1963 to 2024, with nominal multi-party system from 2012. 
*'''{{Flag|Thailand}}''': The [[Thai Rak Thai Party]] was the first political party to surpass the majority in the [[House of Representatives (Thailand)|House of Representatives]]. During the [[2005 Thai general election|general election]], it became a dominant party until a [[2006 Thai coup d'état|coup d'état]] ousted Prime Minister [[Thaksin Shinawatra]] and the dissolution of the House in 2006.
*'''{{Flag|Yemen}}''': [[General People's Congress (Yemen)|General People's Congress]], In power effectively from 1982 (1982–1990 sole legal party) to 2015, ceded effective control after [[Houthi takeover in Yemen|Houthi takeover of Sana'a]].

===Africa===
*'''{{Flag|Algeria}}:''' The [[National Liberation Front (Algeria)|National Liberation Front]] had governed Algeria from 1962 to 1992, from 1992 to 1994 (sole legal party 1962 to 1989), and from 1999 to 2019. The current president, [[Abdelmadjid Tebboune]], is affiliated with FLN, but its partisan power is significantly weakened after the [[2021 Algerian legislative election|2021 parliamentary elections]]. 
*'''{{flag|Botswana}}''': The [[Botswana Democratic Party]] governed the country for 58 years with consecutive [[majority government]]s from independence in 1966 until [[2024 Botswana general election|2024]].
*'''{{Flag|Burkina Faso}}''': The [[Congress for Democracy and Progress]] from 1996 to 2014, under [[Blaise Compaoré]], who ruled first as an independent after a coup from 1987 to 1989, then led the [[Organization for Popular Democracy – Labour Movement]] from 1989 to 1996.
*'''{{Flag|Burundi}}''': [[Union for National Progress]] (UPRONA) from 1962 to 1993 (from 1974 to 1992 as sole legal party).
*'''{{Flag|Central African Republic}}:''' the [[Movement for the Social Evolution of Black Africa]] ruled from 1960 to 1981 (from 1962 to 1980 as sole legal party). 
*'''{{flag|Egypt}}''': The [[National Democratic Party (Egypt)|National Democratic Party (NDP)]] of [[Egypt]], under various names, from 1952 to 2011 (as [[Arab Socialist Union (Egypt)|Arab Socialist Union]], sole legal party 1953–1978)
*'''{{flag|The Gambia}}''': The [[People's Progressive Party (The Gambia)|People's Progressive Party]] in The Gambia from 1962 to 1994. The [[Alliance for Patriotic Reorientation and Construction]] under [[Yahya Jammeh]] from 1996 to 2017, with Jammeh ruling first under a Junta after a [[1994 Gambian coup d'état|coup]] from 1994 to 1996.
*'''{{Flag|Gabon}}''': The [[Gabonese Democratic Party]] governed from independence in 1960 to 2023, ended with the [[2023 Gabonese coup d'état|2023 Gabonese coup]]. 
*'''{{Flag|Guinea-Bissau}}''': [[African Party for the Independence of Guinea and Cape Verde]] (PAIGC) governed from 1974 to 1999 (from 1974 to 1991 as the sole legal party).
*'''{{Flag|Ivory Coast}}''': [[Democratic Party of Ivory Coast – African Democratic Rally|Democratic Party of Ivory Coast]] governed from 1960 to 1999 (from 1960 to 1990 as the sole legal party).
*'''{{flag|Kenya}}''': The [[Kenya African National Union]] in Kenya from 1963 to 2002 (sole legal party 1982–1991).
*'''{{Flag|Liberia}}''': [[True Whig Party]] ruled consecutively from 1878 to 1980, in a de facto one-party state manner, though the country never explicitly banned opposition parties.
*'''{{flag|Nigeria}}''': [[People's Democratic Party (Nigeria)|People's Democratic Party]] (PDP) was in power from May 29, 1999, till May 29, 2015, when the opposition party [[All Progressives Congress]] (APC) won the [[2015 Nigerian presidential election|presidential election]] in 2015.
*'''{{flag|Rhodesia}}''': The [[Rhodesian Front]] in [[Rhodesia]] (now [[Zimbabwe]]), under the leadership of [[Ian Smith]], from 1965 to 1980.
*'''{{flag|Senegal}}''': The [[Socialist Party of Senegal|Socialist Party]] in Senegal from 1960 to 2000 (sole legal party 1966–1974).
*'''{{Flag|Seychelles}}''': [[United Seychelles]] Party ruled from 1977 to 2020 (from 1977 to 1991 as sole legal party).
*'''{{Flag|Sierra Leone}}:''' The [[All People's Congress]] Party ruled from 1968 to 1992 (from 1978 to 1991 as sole legal party).
*'''{{flagicon|South Africa|1928}} {{flag|South Africa}}''': The [[National Party (South Africa)|National Party]] in South Africa from 1948 to 1994. The [[African National Congress]] (ANC) governed South Africa with consecutive majority governments from 1994 to 2024.
*'''{{Flag|Sudan}}''': [[National Congress (Sudan)|National Congress]] from 1998 to 2019 (1998 to 2005 as sole legal party).
*'''{{Flag|Tanzania}}''': Via Chama Cha Mapinduzi (CCM) from 1961 with TANU name to the present (in 2024). No other political party has ever led the country.
*'''{{flag|Tunisia}}''': The [[Democratic Constitutional Rally]] in Tunisia, 1956–2011 (as the sole legal party between 1963 and 1981).
*'''{{flag|Zambia}}''': The [[Movement for Multiparty Democracy]] from 1991 to 2011.

===Oceania===
*'''{{flag|Australia}}:''' The [[Liberal Party of Australia|Liberal Party]] (generally in a near-permanent [[Coalition (Australia)|Coalition]] with the [[National Party of Australia|National Party]]) held power federally from 1949 to 1972 and from 1975 to 1983 (31 out of 34 years). After the expiry of the 46th Parliament in 2022, the [[Coalition (Australia)|Liberal-National Coalition]] held power for 20 out of the 26 years between 1996 and 2022. Overall from 1949 to 2022, the Liberal Party held power for 52 out of 73 years. The longest-serving [[Prime Minister of Australia|Prime Minister]] was [[Robert Menzies]], who served from 1939 to 1941 (2 years) as a member of the [[United Australia Party]], and from 1949 to 1966 (16 years) as leader of the Liberal Party. The second longest-serving was [[John Howard]] (Liberal Party), who was Prime Minister from 1996-2007 (11 years).
**'''{{flag|Northern Territory}}:''' The [[Country Liberal Party]] held power from the granting of self-government in 1978 to 2001 (23 years).
**'''{{flag|New South Wales}}:''' The [[Australian Labor Party (New South Wales Branch)|Labor Party]] held power from 1941 to 1965 (24 years), and from 1976 to 1988 and 1995 to 2011 (28 out of 35 years) – in total 52 out of 70 years from 1941 to 2011.
**'''{{flag|Queensland}}:''' The [[Australian Labor Party (Queensland Branch)|Labor Party]] held power from 1915 to 1929 and from 1932 to 1957 (39 out of 42 years). The [[National Party of Australia – Queensland|National Party]] then held power from 1957 to 1989 (32 years) with and without the [[Liberal Party of Australia (Queensland Division)|Liberal Party]]. These were facilitated by a Labor-designed malapportionment that favoured rural districts. The National Party under [[Joh Bjelke-Petersen]] increased the malapportionment with the [[Bjelkemander]], allowing them to rule alone without the Liberals, and used the police to suppress dissent and opposition from Labor. The National Party dominance was ended by a corruption inquiry, Bjelke-Petersen was forced to resign in disgrace, and police and politicians were charged with crimes. Since 1989, Labor has held government aside from a National Party government (1996 to 1998) and Liberal-National Party government (2012 to 2015) (28 years of Labor government out of 33 years).
**'''{{flag|South Australia}}:''' The [[Liberal Party of Australia (South Australian Division)|Liberal and Country League]] held power from 1933 to 1965 (32 years) through the [[Playmander]]. Since the ending of malapportionment after the [[1968 South Australian state election|1968 election]], the [[Australian Labor Party (South Australian Branch)|Labor Party]] has held power from 1970 to 1979, from 1982 to 1993, from 2002 to 2018 (26 out of 38 years), and has been in power since 2022.
**'''{{flag|Tasmania}}:''' The [[Australian Labor Party (Tasmanian Branch)|Labor Party]] held power from 1934 to 1969 and from 1972 to 1982 (45 out of 48 years), from 1989 to 1992, and from 1998 to 2014 (16 years) – in total 64 out of 80 years from 1934 to 2014.
**'''{{flag|Victoria}}:''' The [[National Citizens' Reform League]] (1902–1909), the [[Liberal Party (Australia, 1909)|Deakinite Liberal Party]] (1909–1917) and the [[Nationalist Party (Australia)|Nationalist Party]] (1917–1924) consecutively held power from 1902 to 1924 (22 years). The [[National Party of Australia – Victoria|Country Party]] then ruled from 1924 to 1927 (3 years), followed by the Nationalist Party from 1928 to 1929 (1 year) in a [[Coalition (Australia)#Victoria|coalition]]. The Country Party and the [[United Australia Party]] (later as the [[Liberal Party of Australia (Victorian Division)|Liberal and Country Party]]) held power with and without a coalition from 1932 to 1945 (13 years) and 1947 to 1952 (5 years). The Liberal Party then held power from 1955 to 1982 (27 years). In total, centre-right governments ruled 71 out of 80 years from 1902 to 1982.
**'''{{flag|Western Australia}}:''' The [[Liberal Party of Australia (Western Australian Division)|Liberal Party]] held power from 1947 to 1983 with two one-term interruptions between 1953 and 1956 and 1971 to 1974 (30 out of 36 years).
**'''{{flag|Australian Capital Territory}}:''' The [[Australian Labor Party (Australian Capital Territory Branch)|Labor Party]] has held power since 2001 (23 years as of 2024) (in coalition with the [[ACT Greens]] since 2012), previously holding government between 1989 and 1995 (24 years out of 30 years since self-government).
*'''{{Flag|New Zealand}}''': The [[New Zealand Liberal Party|Liberal Party]] governed from 1891 to 1912.
*'''{{Flag|Samoa}}''': The [[Human Rights Protection Party]] governed from 1982 to 2021.

== See also ==
* [[One-party state]]
* [[Loyal opposition]]
* [[Multi-party system]]
* [[Party of power]]
* [[Separation of powers]]
* [[Soft despotism]]
* [[Two-party system]]
* [[Types of democracy]]
* [[Uniparty]]

== Notes ==
{{NoteFoot}}

== References ==
{{Reflist}}

{{Authoritarian types of rule}}

{{Authority control}}

[[Category:Political party systems]]
[[Category:Elections]]
[[Category:Political systems]]
[[Category:Unitary state]]
[[Category:Authoritarianism]]