View source for Politics of Australia

{{Short description|Political system of Australia}}
{{Use Australian English|date=January 2014}}
{{Use dmy dates|date=October 2023}}
{{Politics of Australia sidebar|expanded=yes}}

The '''politics of Australia''' operates under the written [[Australian Constitution]], which sets out Australia as a [[constitutional monarchy]], governed via a [[parliamentary democracy]] in the [[Westminster system|Westminster tradition]]. Australia is also a [[federation]], where power is divided between the federal government and the [[States and territories of Australia|states]]. The [[Monarchy of Australia|monarch]], currently [[King Charles III]], is the [[head of state]] and is represented locally by the [[Governor-General of Australia|governor-general]], while the [[head of government]] is the [[Prime Minister of Australia|prime minister]], currently [[Anthony Albanese]]. 

The country has maintained a stable [[liberal democracy|liberal democratic]] political system under its [[Constitution of Australia|Constitution]], [[list of national constitutions|the world's tenth oldest]], since [[Federation of Australia|Federation]] in 1901. Australia largely operates as a [[two-party system]] in which [[compulsory voting|voting is compulsory]].<ref>{{cite web |url=http://regional.gov.au/territories/norfolk_island/administrator/media/2015/ni-a-mr-201506.aspx|title=Commonwealth Day 2015|last=Hardgrave|first=Gary|date=2 March 2015|publisher=[[Department of Infrastructure and Regional Development]], Government of Australia|access-date=1 September 2015}}</ref><ref>{{cite web |url=http://www.aec.gov.au/FAQs/Voting_Australia.htm#compulsory |title=Is voting compulsory? |work=Voting within Australia – Frequently Asked Questions |publisher=Australian Electoral Commission |date=2015 |access-date=1 September 2015}}</ref> {{Democracy Index rating|Australia|full democracy|2023}} 

Like other [[Westminster system|Westminster-style systems of government]], Australia's federal system of government [[Separation of powers in Australia|consists of three branches]]: the legislative ([[Parliament of Australia|Parliament]]), the executive (the [[Prime Minister of Australia|prime minister]], the [[Cabinet of Australia|cabinet]], other [[Ministers of the Crown|ministers]], and government departments), and the [[Judiciary of Australia|judicature]] (the [[High Court of Australia]] and other [[Judiciary of Australia|federal courts]]). The [[Australian Government|Australian government]] consists of the party or coalition that had majority support in the lower house and exercises both executive (as ministers) and legislative (through control of the House) power.
[[File:Australian Government Structure.svg|thumb|473x473px|Diagram of the roles of Australian political institutions]]
The federal Parliament (as defined in [[Section 1 of the Constitution of Australia|section 1 of the Constitution]]) comprises the monarch and is bicameral (has two chambers): the [[House of Representatives (Australia)|House of Representatives]] (lower house) and [[Australian Senate|Senate]] (upper house).<ref>{{Cite web |title=Bicameral representation |url=https://www.aph.gov.au/About_Parliament/Parliamentary_Departments/Parliamentary_Library/pubs/APF/monographs/What_lies_beneath/Bicameral |archive-url=https://web.archive.org/web/20230317044400/https://www.aph.gov.au/About_Parliament/Parliamentary_Departments/Parliamentary_Library/pubs/APF/monographs/What_lies_beneath/Bicameral |archive-date=2023-03-17 |access-date=2023-06-03 |publisher=[[Parliament of Australia]] |language=en-AU}}</ref> The House of Representatives has 150 [[Member of parliament|members]], each representing an individual electoral district of about 165,000 people.<ref>{{Cite web |title=Members |url=https://www.aph.gov.au/Senators_and_Members/Members |archive-url=https://web.archive.org/web/20120220192532/http://www.aph.gov.au/Senators_and_Members/Members |archive-date=2012-02-20 |access-date=2023-06-03 |publisher=[[Parliament of Australia]] |language=en-AU}}</ref> The Senate has 76 members: twelve from each of the six states and two each from Australia's internal territories, the [[Australian Capital Territory]] and [[Northern Territory]].

[[Separation of powers]] is the principle the power of state should be shared between multiple bodies, in order to avoid the concentration of power in one entity.<ref name="Parliamentary Education Office-2023_2">{{Cite web |title=Separation of powers: Parliament, Executive and Judiciary |url=https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers-parliament-executive-and-judiciary/ |url-status=live |archive-url=https://web.archive.org/web/20231031132705/https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers-parliament-executive-and-judiciary/ |archive-date=31 October 2023 |access-date=2023-11-08 |website=Parliamentary Education Office |publisher= |language=en}}</ref> The legislature proposes and debates laws that the executive then administers, and the judicial arbitrates cases arising from the administration of laws and [[common law]]. However, in accordance with [[Westminster system]], there is no strict separation between the executive and legislative branches, with ministers required to also be members of the legislature.<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution|64}}</ref><ref>{{Cite book |last1=Williams |first1=George |title=Blackshield and Williams Australian constitutional law and theory: commentary and materials |last2=Brennan |first2=Sean |last3=Lynch |first3=Andrew |date=2018 |publisher=The Federation Press |isbn=978-1-76002-151-1 |edition=7th |location=Sydney |page=25 |quote=Under the Westminster system of government which Australia has inherited from the United Kingdom ... there is no similar strict separation between legislative and executive power. On the contrary, the executive is integrated into the legislature by the requirement that the ministers responsible for the departments of government must be Members of Parliament accountable to it through such mechanisms as question time.}}</ref> Only the High Court can deem if a law is constitutional or not.<ref name="Parliamentary Education Office-2023_2" />

The Australian system of government combines elements derived from the political systems of the [[Westminster system|United Kingdom]] ([[Fusion of powers|fused executive]], [[constitutional monarchy]]) and the [[United States Government|United States]] ([[federalism]], [[written constitution]], [[bicameralism|strong bicameralism]]), along with distinctive local features, and has therefore been characterised as a "Washminster mutation".<ref>{{Cite web |title=How have the British and US systems of government influenced the Australian government system? |url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |access-date=2023-12-05 |website=Parliamentary Education Office |language=en}}</ref><ref>{{cite journal |last=Thompson |first=Elaine |date=1980 |title=The "Washminster" Mutation |url=https://www.tandfonline.com/doi/abs/10.1080/00323268008401755 |journal=Australian Journal of Political Science |volume=15 |issue=2 |pages=32–40 |doi=10.1080/00323268008401755 |url-access=subscription |via=Taylor & Francis Online |doi-access=}}</ref><ref>{{Cite journal |last=Thompson |first=Elaine |date=2001 |title=The Constitution and the Australian System of Limited Government, Responsible Government and Representative Democracy: Revisiting the Washminster Mutation |url=https://www.austlii.edu.au/cgi-bin/viewdoc/au/journals/UNSWLJ/2001/53.html |journal=University of New South Wales Law Journal |volume=24 |issue=3 |via=[[Austlii]]}}</ref>

{{Images of branches of Australian Government}}

== Federal nature ==
Australia is a [[federation]], with different powers and responsibilities for the three levels of government: the federal government, the [[States and territories of Australia|states and territories]] and [[Local government in Australia|local government]].

The federal nature and the structure of the [[Parliament of Australia]] were the subject of protracted negotiations among the colonies during the drafting of the Constitution.<ref>{{Cite web |title=Australasian Federation Convention |url=https://timeline.peo.gov.au/#event-australasianafederationaconvention |archive-url=https://archive.today/20230708202549/https://timeline.peo.gov.au/%23event-australasianafederationaconvention |archive-date=2023-07-08 |access-date=2023-07-08 |website=timeline.peo.gov.au |publisher=Parliamentary Education Office}}</ref> The [[Australian House of Representatives|House of Representatives]] is elected on a basis that reflects the differing populations of the states. Therefore, the most populous state, [[New South Wales]], has 48 members, while the least populated, [[Tasmania]], has only five.<ref name="Parliament of Australia-2023_2">{{Cite web |last= |first= |title=Infosheet 8 – Elections for the House of Representatives |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/00_-_Infosheets/Infosheet_8_-_Elections_for_the_House_of_Representatives |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626043015/https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/00_-_Infosheets/Infosheet_8_-_Elections_for_the_House_of_Representatives |archive-date=26 June 2023 |access-date=2023-07-08 |website=Parliament of Australia |publisher=[[Parliament of Australia]] |language=en-AU}}{{cbignore|bot=medic}}</ref> This is in contrast to the [[Australian Senate|Senate]] which is elected on a basis of equality among the states: all states elect 12 senators, regardless of population. This was intended to ensure that  smaller states retained influence over legislation and that laws could not be passed with only the support of the more populous states.<ref>{{Cite web |last= |first= |date=July 2023 |title=Senate Briefs No. 9: Origins of the Senate |url=https://www.aph.gov.au/About_Parliament/Senate/Powers_practice_n_procedures/Senate_Briefs/Brief09 |access-date= |website=Parliament of Australia |language=en-AU}}</ref> The Australian Capital Territory and the Northern Territory, the only territories represented in Senate, each elect only two.<ref>{{Cite web |last= |first= |date=July 2023 |title=Senate Briefs No.1: Electing Australia's Senators |url=https://www.aph.gov.au/About_Parliament/Senate/Powers_practice_n_procedures/Senate_Briefs/Brief01 |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626043012/https://www.aph.gov.au/About_Parliament/Senate/Powers_practice_n_procedures/Senate_Briefs/Brief01 |archive-date=26 June 2023 |access-date= |website=Parliament of Australia |publisher= |language=en-AU}}{{cbignore|bot=medic}}</ref>

The federal government may only legislate on certain matters, with any remaining areas falling within the responsibility of the states. For example, the federal government has the responsibility for defence, inter-state trade and bankruptcy while the states have responsibility for healthcare and education.<ref name="Parliamentary Education Office-2023_1" /> Additionally, the states can agree to refer any of their powers to the Commonwealth government via legislation, as has been done to allow the Commonwealth to regulate corporations.<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution|51}}(xxxvii.)</ref> The federal government can also significantly influence state legislation by making tied grants (money which comes with certain conditions). This is a significant power due to high levels of [[Fiscal imbalance in Australia|vertical fiscal imbalance]] arising because of the limited revenue raising capabilities of the states.<ref>{{Cite web |last=Galligan |first=Brian |date=2014-09-15 |title=Renewing federalism: what are the solutions to Vertical Fiscal Imbalance? |url=http://theconversation.com/renewing-federalism-what-are-the-solutions-to-vertical-fiscal-imbalance-31422 |access-date=2023-12-11 |website=The Conversation |language=en-US}}</ref>

In addition, Australia has several territories, two of which are self-governing: the [[Australian Capital Territory]] and the [[Northern Territory]]. As these territories' legislatures exercise powers devolved to them by the Commonwealth, the Parliament of Australia has the authority to override their legislation and to alter their powers. Australian citizens in these territories are represented by members of both houses of the Parliament of Australia, albeit with less representation in the Senate. [[Norfolk Island]] was self-governing from 1979 until 2015, although it was never represented as such in the Parliament of Australia.<ref name="Parliamentary Education Office-2023_1">{{Cite web |title=Three levels of government: governing Australia |url=https://peo.gov.au/understand-our-parliament/how-parliament-works/three-levels-of-government/three-levels-of-government-governing-australia/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626070737/https://peo.gov.au/understand-our-parliament/how-parliament-works/three-levels-of-government/three-levels-of-government-governing-australia/ |archive-date=26 June 2023 |access-date=2023-07-08 |website=Parliamentary Education Office |publisher= |language=en}}{{cbignore|bot=medic}}</ref> The other inhabited territories: [[Jervis Bay Territory|Jervis Bay]], [[Christmas Island]] and the [[Cocos (Keeling) Islands]], have never been self-governing.<ref>{{Cite web |title=Jervis Bay Territory governance and administration |url=https://www.infrastructure.gov.au/territories-regions-cities/territories/jervis-bay-territory/governance-administration |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626095357/https://www.infrastructure.gov.au/territories-regions-cities/territories/jervis-bay-territory/governance-administration |archive-date=26 June 2023 |access-date=2023-07-08 |website=The Department of Infrastructure, Transport, Regional Development, Communications and the Arts |publisher=[[Government of Australia]]}}{{cbignore|bot=medic}}</ref><ref>{{Cite web |title=Christmas Island governance and administration |url=https://www.infrastructure.gov.au/territories-regions-cities/territories/indian-ocean-territories/christmas-island/governance-administration |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626095357/https://www.infrastructure.gov.au/territories-regions-cities/territories/indian-ocean-territories/christmas-island/governance-administration |archive-date=26 June 2023 |access-date=8 July 2023 |website=The Department of Infrastructure, Transport, Regional Development, Communications |publisher=Australian Government}}{{cbignore|bot=medic}}</ref><ref>{{Cite web |title=Cocos (Keeling) Islands governance and administration |url=https://www.infrastructure.gov.au/territories-regions-cities/territories/indian-ocean-territories/cocos-keeling-islands/governance-administration |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626095050/https://www.infrastructure.gov.au/territories-regions-cities/territories/indian-ocean-territories/cocos-keeling-islands/governance-administration |archive-date=26 June 2023 |access-date=8 July 2023 |website=The Department of Infrastructure, Transport, Regional Development, Communications and the Arts |publisher=Government of Australia}}{{cbignore|bot=medic}}</ref>

The third level of governance is [[Local government in Australia|local government]], in the form of [[Shire|shires]], towns or cities. The councils of these areas are composed of elected representatives (known as either [[councillor]] or [[alderman]], depending on the state). Their powers are devolved to them by the state or territory in which they are located.<ref name="Parliamentary Education Office-2023_1" />

== Constitution ==
{{Main|Constitution of Australia}}

The Australian Constitution sets down the powers and responsibilities of many of the institutions of the Australian Commonwealth. However, the prime minister, the cabinet and the other principles of responsible government are not explicitly mentioned in the document, along with most of the realities of exercise of executive power. This reflected the British influence on the document with [[British constitution|its unwritten constitution]]. 

The Parliament of Australia can propose changes to the Constitution. To become effective, the proposals must be put to a [[Referendums in Australia|referendum]] of all Australians of voting age and must receive a ''double majority'': a majority of all votes, and a majority of votes in a majority of states.<ref>{{Cite web |title=Referendums and plebiscites |url=https://peo.gov.au/understand-our-parliament/having-your-say/elections-and-voting/referendums-and-plebiscites/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626071602/https://peo.gov.au/understand-our-parliament/having-your-say/elections-and-voting/referendums-and-plebiscites/ |archive-date=26 June 2023 |access-date=2023-07-08 |website= |publisher=Parliamentary Education Office |language=en}}{{cbignore|bot=medic}}</ref>

Section 1 of the [[Constitution of Australia|Australian Constitution]] creates a democratic legislature, the [[Bicameralism|bicameral]] [[Parliament of Australia]] which consists of the [[Monarchy of Australia|monarch]] and two chambers of parliament, the [[Australian Senate|Senate]] and the [[House of Representatives (Australia)|House of Representatives]].<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution}} s 1</ref> [[Section 51 of the Constitution of Australia|Section 51]] of the Constitution provides for the Australian government's legislative powers and allocates certain powers (known as ''heads of power'') to the federal government.<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution|51}}</ref> All remaining legislative power is retained by the six [[Parliaments of the Australian states and territories|states]] (previously separate colonies).<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution|107}}</ref> Further, each state has its own constitution, so that Australia has seven parliaments, with legislative power shared between them.<ref>{{Cite web |date=19 July 2022 |title=Three levels of government: governing Australia |url=https://peo.gov.au/understand-our-parliament/how-parliament-works/three-levels-of-government/the-roles-and-responsibilities-of-the-three-levels-of-government/ |access-date=2023-07-08 |website=Parliamentary Education Office |publisher= |language=en |archive-date=7 November 2019 |archive-url=http://webarchive.nla.gov.au/awa/20191107024508/http://www.peo.gov.au/understand-our-parliament/how-parliament-works/three-levels-of-government/the-roles-and-responsibilities-of-the-three-levels-of-government/ |url-status=dead }}{{cbignore|bot=medic}}</ref> The [[High Court of Australia]] rules on legal disputes which arise between the federal government and the states and territories, or among the states and territories themselves.

== The Crown ==
{{Main|Monarchy of Australia|Governor-General of Australia}}
[[File:Government_House_Canberra.JPG|thumb|[[Government House, Canberra]]]]The monarch is the symbolic head of Australia and is ceremonially involved in all branches of the government, as a constitutive part of Parliament, formal holder of executive power and the person in whose name most criminal offences are brought. In a broader sense, [[the Crown]] represents the authority of the polity itself.<ref>{{Cite journal |last=Saunders |first=Cheryl |date=2015 |title=The Concept of the Crown |url=https://law.unimelb.edu.au/__data/assets/pdf_file/0004/1587019/383Saunders4.pdf |journal=Melbourne University Law Review |volume=38}}</ref> However, in all these functions they are represented by the governor-general, whose appointment is the only mandatory function of the monarch. The [[monarch of Australia]], currently [[Charles III]], is also the monarch of the other [[Commonwealth realm|Commonwealth realms]], and the sovereign of the United Kingdom.<ref>{{Cite news |last=McElroy |first=Nicholas |date=2022-12-23 |title=Australia's new king will be officially crowned in a few months. Here's what an alternative could look like |language=en-AU |work=[[ABC News (Australia)|ABC News]] |url=https://www.abc.net.au/news/2022-12-24/king-charles-australias-head-of-state-alternative-republic/101470156 |access-date=2023-08-05 |quote="I think that that isn't well understood", said Cindy McCreery, a senior lecturer of history at the University of Sydney. "The fact is that the British monarch is separately, individually monarch of the remaining Commonwealth Realms. "So when King Charles goes to Canada, he is King of Canada, when he goes to Australia, he's King of Australia, and that those are actually separate relationships."}}</ref> The monarch is the [[head of state]], however in almost all matters the governor-general performs the functions of the head of state, [[Australian head of state dispute|leading some commentators to contend that the governor-general is the head of state]]. As a [[constitutional democracy]], the role is limited to constitutional and ceremonial duties.<ref>{{Cite web |last=Democracy |first=Centre of |title=Head of State |url=https://www.centreofdemocracy.sa.gov.au/head-of-state/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230325134058/https://www.centreofdemocracy.sa.gov.au/head-of-state/ |archive-date=25 March 2023 |access-date=2023-08-05 |website=Centre of Democracy |language=en-US}}{{cbignore|bot=medic}}</ref> The governor-general also represents Australia internationally, through making and receiving state visits.<ref>{{cite web |date=20 July 2015 |title=Governor-General's Role |url=http://www.gg.gov.au/governor-generals-role |url-status=dead |archive-url=https://web.archive.org/web/20190411022216/http://gg.gov.au/governor-generals-role |archive-date=11 April 2019 |access-date=1 March 2015 |publisher=Office of the Governor-General}}</ref><ref>{{Cite web |date=2022-06-30 |title=Australia |url=https://www.royal.uk/australia |url-status=dead |archive-url=https://web.archive.org/web/20220630105725/https://www.royal.uk/australia |archive-date=30 June 2022 |access-date=2023-08-05 |website=The Royal Family}}</ref>

Since at least the [[Statute of Westminster 1931|passage]] and [[Statute of Westminster Adoption Act 1942|adoption]] of the ''Statute of Westminster'', the Monarch of Australia (along with the monarchies of the other dominions) is a separate office from the [[Monarchy of the United Kingdom|Monarch of the United Kingdom]], despite being held by the same person. As such, in Commonwealth matters, the monarch is only advised by Commonwealth ministers. By the ''[[Royal Style and Titles Act 1953]]'', the Australian Parliament gave the Queen the title ''[[Queen of Australia]]'', and in 1973 titles with any reference to her status as [[Queen of the United Kingdom]] and [[Fidei defensor|Defender of the Faith]] as well were removed.<ref>{{Cite web |title=Royal Style and Titles Act 1953 (Cth) |url=https://www.foundingdocs.gov.au/item-did-27.html |access-date=2023-08-05 |website=Documenting Democracy |publisher=[[Museum of Australian Democracy]]}}</ref><ref>{{Cite web |title=Royal Style and Titles Act 1973 (Cth) |url=https://www.foundingdocs.gov.au/item-sdid-99.html |access-date=2023-08-05 |website=Documenting Democracy |publisher=[[Museum of Australian Democracy]]}}</ref>

Under the conventions of the [[Westminster system]] the governor-general's powers are almost always exercised on the advice of the Prime Minister or other ministers.<ref>{{Cite web |title=Who has more power, the Governor-General or the Prime Minister? |url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230325134058/https://peo.gov.au/understand-our-parliament/your-questions-on-notice/questions/who-has-more-power-the-governor-general-or-the-prime-minister/ |archive-date=25 March 2023 |access-date=2023-08-05 |website=The Parliamentary Education Office (PEO) |language=en}}{{cbignore|bot=medic}}</ref> However, the governor-general retains some [[reserve powers]], being powers not subject to the approval of another person or institution.<ref>{{Cite book |last1=Williams |first1=George |title=Blackshield and Williams Australian Constitutional Law and Theory: Commentary and Materials. |last2=Brennan |first2=Sean |last3=Lynch |first3=Andrew |publisher=Federation Press |year=2018 |isbn=9781760022600 |edition=7th |location=Sydney |page=438 [12.16] |quote=There are exceptions to the convention that the Governor-General should act only on advice. These are the ‘reserve powers’, which the Governor-General can exercise in the absence of, or even contrary to, such advice.}}</ref> These are rarely exercised, but during the [[1975 Australian constitutional crisis|Australian constitutional crisis of 1975]] Governor-General Sir [[John Kerr (Governor-General)|John Kerr]] used them to dismiss the prime minister during a parliamentary deadlock over supply.<ref>{{Cite web |title=What are reserve powers? |url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |url-status=dead |archive-url=http://webarchive.nla.gov.au/awa/20230312065832/https://peo.gov.au/understand-our-parliament/your-questions-on-notice/questions/what-are-reserve-powers/ |archive-date=12 March 2023 |access-date=2023-08-05 |website=The Parliamentary Education Office (PEO) |language=en}}{{cbignore|bot=medic}}</ref><ref>{{Cite web |title=Reserve Powers and the Whitlam dismissal |url=https://www.ruleoflaw.org.au/constitution/reserve-powers-and-the-whitlam-dismissal/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20220318123154/https://www.ruleoflaw.org.au/constitution/reserve-powers-and-the-whitlam-dismissal/ |archive-date=18 March 2022 |access-date=2023-08-05 |website=Rule of Law Education Centre |language=en-AU}}{{cbignore|bot=medic}}</ref>

Australia has periodically experienced movements seeking to end the monarchy. In a [[1999 Australian republic referendum|1999 referendum]], the Australian people voted on a proposal to change the Constitution.<ref>{{Cite web |last= |first= |title=1999 Referendum |url=https://www.aec.gov.au/Elections/referendums/1999_Referendum_Reports_Statistics/1999.htm |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20220328165637/https://www.aec.gov.au/elections/referendums/1999_referendum_reports_statistics/1999.htm |archive-date=28 March 2022 |access-date=2023-08-05 |website=[[Australian Electoral Commission]] |language=en-AU}}{{cbignore|bot=medic}}</ref> The proposal would have removed references to the [[Queen of Australia|Queen]] from the Constitution and replaced the [[Governor-General of Australia|governor-general]] with a president nominated by the prime minister, but subject to the approval of a two-thirds majority of both houses of Parliament. The proposal was defeated.<ref>{{Cite web |date=1999-11-30 |title=Referendum '99 National Results – Question 1 – Republic |url=http://www.referendum.aec.gov.au/ |url-status=bot: unknown |archive-url=http://webarchive.nla.gov.au/awa/20000301132327/http://www.referendum.aec.gov.au/ |archive-date=1 March 2000 |access-date=2023-08-05 |website=Australian Electoral Commission – Virtual Tallyroom}}{{cbignore|bot=medic}}</ref> The [[Australian Republican Movement]] continues to campaign for [[Republicanism in Australia|an end to the monarchy in Australia]], opposed by [[Australians for Constitutional Monarchy]] and [[Australian Monarchist League]].

==The Parliament==
{{Main|Parliament of Australia}}
[[File:Parliament House at dusk, Canberra ACT.jpg|thumb|alt=A large white and cream coloured building with grass on its roof. The building is topped with a large flagpole.|[[Parliament House, Canberra]].]]The Parliament exercises the [[legislative power]] of the Commonwealth by enacting legislation. It also supervises the executive actions of the government, through activities such as question time and Senate estimates.<ref>{{Cite web |title=Separation of powers: Parliament, Executive and Judiciary |url=https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626071211/https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers/ |archive-date=26 June 2023 |access-date=2023-07-30 |website=The Parliamentary Education Office (PEO) |language=en}}{{cbignore|bot=medic}}</ref> The [[Parliament of Australia|Australian Parliament]] is [[bicameral]] and consists of the [[King of Australia]], the 76 member [[Australian Senate|Senate]] (the ''upper house'') and the 151 member [[Australian House of Representatives|House of Representatives]] (the ''lower house''). The [[Australian Government|Australian government]] is [[Responsible government|responsible to the Parliament]], of which they must be (or shortly become) members. In the Senate, 12 senators are from each State and 2 senators from the ACT and the NT respectively are elected by an [[Optional preferential voting|optional preferential]] [[single transferable vote]] system.<ref>{{Cite web |last= |first= |title=Senate elections |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter3/Senate_elections |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230627030615/http://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter3/Senate_elections |archive-date=27 June 2023 |access-date=2023-07-30 |website=[[Parliament of Australia]] |language=en-AU}}{{cbignore|bot=medic}}</ref> State senators serve staggered fixed six year terms, with half up for election each three years. Territory senators serve a non fixed term equal to that of the House of Representatives, usually around three years.<ref>{{Cite web |last= |first= |title=No.1 – Electing Australia's Senators |url=https://www.aph.gov.au/About_Parliament/Senate/Powers_practice_n_procedures/Senate_Briefs/Brief01 |access-date=2023-07-30 |website=[[Parliament of Australia]] |language=en-AU}}</ref> The most recent general election was on [[2025 Australian federal election|3 May, 2025.]][[File:Australian_House_of_Representatives_-_Parliament_of_Australia.jpg|right|thumb|The [[Australian House of Representatives]] chamber]]In the House of Representatives, also known as the ''people's house,<ref>{{Cite web |last= |first= |title=About the House of Representatives |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/About_the_House_of_Representatives |access-date=2023-11-30 |website=Parliament of Australia |language=en-AU}}</ref>'' 151 members are elected using [[Instant-runoff voting|full preferential voting]] in single member electorates (also known as ''seats''). Elections are held once at least every three years, however the prime minister (historically the Cabinet) may request the governor-general call a new election at any time (however, they retain the discretion to refuse if inadequate reasons for the election are given).<ref name="Parliament of Australia-2023_2" /><ref>{{Cite web |last= |first= |title=Powers and functions of the Governor-General |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter1/Powers_and_Functions_of_the_Governor-General |access-date=2023-11-08 |website=Parliament of Australia |language=en-AU |quote=It is clear that it is incumbent on the Prime Minister to establish sufficient grounds for the need for dissolution, particularly when the House is not near the end of its three year term. The Governor-General makes a judgment on the sufficiency of the grounds. It is in this situation where it is generally recognised that the Governor-General may exercise a discretion not to accept the advice given.}}</ref> However, as Senate elections must occur only during certain periods and as it is generally politically advantageous (while not legally required) to hold House elections at the same time,<ref>{{Cite web |last=Green |first=Antony |author-link=Antony Green |date=2022-03-06 |title=Why the 2022 House and Senate Elections will be held on the same day |url=https://antonygreen.com.au/why-the-2022-house-and-senate-elections-will-be-held-on-the-same-day/ |access-date=2023-11-30 |website=Antony Green's Election Blog |language=en-AU}}</ref> elections are generally restricted to a ten month window between August and May every three years, with the last split election in [[1970 Australian Senate election|1970]] and [[1972 Australian federal election|1972]].<ref>{{Cite web |last=Green |first=Antony |author-link=Antony Green |date=2021-06-29 |title=When can the Next Federal Election be Held? |url=https://antonygreen.com.au/when-can-the-next-federal-election-be-held/ |access-date=2023-11-30 |website=Antony Green's Election Blog |language=en-AU}}</ref> Unlike in the Senate, in which each state is represented equally, each state has a number of seats roughly proportional to its population. The prime minister is selected from the House, needing the support of the majority of members in order to be invited to form a government.<ref>{{Cite web |title=How is the Prime Minister chosen? |url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230627030616/https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |archive-date=27 June 2023 |access-date=2023-07-30 |website=The Parliamentary Education Office (PEO) |language=en}}{{cbignore|bot=medic}}</ref>

Each chamber of Parliament has equal powers, with the exception that the Senate may not introduce "money bills" (new taxes or laws authorising expenditure).<ref>{{Cite Legislation AU|Cth|act|coaca430|Australian Constitution|53}}</ref> However, the Senate can still block [[Appropriation bill|supply]] (the annual bill authorising government expenditure), but this has only happened once, during the [[1975 Australian constitutional crisis]].<ref>{{Cite book |last=Reid |first=Alan Douglas |title=The Whitlam venture |date=1976 |publisher=Hill of Content |isbn=978-0-85572-079-7 |location=Melbourne}}</ref><ref>{{Cite web |last= |first= |title=4. The crisis of 1974-75 |url=https://www.aph.gov.au/About_Parliament/Senate/Powers_practice_n_procedures/platparl/c04 |access-date=2024-02-25 |website=www.aph.gov.au |language=en-AU}}</ref> 

Parliamentarians belong to either the government, the opposition or sit on the cross-bench (which includes independents and members of minor parties). The opposition consists of members of the second largest party or coalition in the House of Representatives. The Leader of the Opposition heads shadow cabinet, composed of shadow ministers who mirror, scrutinise and oppose government ministers and act as the government in waiting. Although the government, by virtue of commanding a majority of members in the lower house of the Parliament, can usually pass its legislation and control the workings of the House, the opposition can considerably delay the passage of legislation and obstruct government business if it chooses.<ref>{{Cite web |last= |first= |title=Infosheet 19 – The House, government and opposition |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/00_-_Infosheets/Infosheet_19_-_The_House_government_and_opposition |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20211220085704/https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/Government%20and%20Parliament |archive-date=20 December 2021 |access-date=2023-07-30 |website=Parliament of Australia |language=en-AU}}{{cbignore|bot=medic}}</ref> The day-to-day business of the [[House of Representatives of Australia|House of Representatives]] is usually negotiated between the [[Leader of the House (Australia)|Leader of the House]], appointed by the prime minister, and the [[Manager of Opposition Business in the House (Australia)|Manager of Opposition Business in the House]], appointed by the [[Leader of the Opposition (Australia)|Leader of the Opposition]].<ref>{{Cite web |last= |first= |title=The (official) Opposition |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/The_(official)_Opposition |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230627030549/https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/The_(official)_Opposition |archive-date=27 June 2023 |access-date=2023-07-30 |website=Parliament of Australia |language=en-AU}}{{cbignore|bot=medic}}</ref>
==The Executive Government==
{{Main|Australian Government|}}
[[File:Government House Canberra.JPG|thumb|[[Government House, Canberra]], also known as "Yarralumla", is the official residence of the [[Governor-General of Australia|Governor-General]].]]The executive's primary role is to implement the laws passed by the Parliament. Unlike the other two branches of government however, membership of the executive is not clearly defined. One definition describes the executive as a pyramid, consisting of three layers.  At the top stands The King, as the symbolic apex and formal repository of executive power. Below him lies a second layer made up of the prime-minister, cabinet and other ministers who in practice lead the executive. Finally, the bottom layer includes public servants, police, government departments and independent statutory bodies who directly implement policy and laws.<ref>{{Cite web |title=Separation of powers: Parliament, Executive and Judiciary |url=https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers-parliament-executive-and-judiciary/ |url-status=live |archive-url=https://web.archive.org/web/20231031132705/https://peo.gov.au/understand-our-parliament/how-parliament-works/system-of-government/separation-of-powers-parliament-executive-and-judiciary/ |archive-date=31 October 2023 |access-date=2023-11-08 |website=Parliamentary Education Office |publisher= |language=en}}</ref><ref>{{Cite web |last=Appleby |first=Gabrielle |date=2023-09-14 |title=Explainer: what is executive government and what does it have to do with the Voice to Parliament? |url=https://newsroom.unsw.edu.au/news/business-law/explainer-what-executive-government-and-what-does-it-have-do-voice-parliament |access-date=2023-11-14 |website=UNSW Newsroom |publisher=[[University of New South Wales]]}}</ref>

Executive power is also difficult to clearly define. In the British context, it was defined by John Locke as all government power not legislative or judicial in nature.<ref>{{Cite book |last=Moore |first=Cameroon |title=Crown and Sword: Executive Power and the Use of Force by the Australian Defence Force |publisher=ANU Press |year=2017 |isbn=9781760461553 |location=Canberra |page=10 |doi=10.22459/CS.11.2017 |jstor=j.ctt1zgwk12.6 |doi-access=free}}</ref> The key distinction is that while legislative power involves setting down rules of general application, executive power involves applying those rules to specific situations. In practice however, this definition is difficult to apply as many actions by executive agencies are wide ranging, binding and conducted independently of Parliament. Ultimately whether a power is executive or legislative is determined on a case by case basis, and involves the weighing up of various factors, rather than the application of a strict test.<ref>{{Cite journal |last=Greentree |first=Catherine Dale |date=2020 |title=The Commonwealth Executive Power: Historical Constitutional Origins and the Future of the Prerogative |url=https://www.unswlawjournal.unsw.edu.au/wp-content/uploads/2020/09/06-GREENTREE.pdf |journal=University of New South Wales Law Journal |volume=43 |issue=3 |doi=10.53637/GJLF5868}}</ref>

=== Executive council ===
{{main|Federal Executive Council (Australia)}}
The Federal Executive Council is a formal body which exists and meets to give legal effect to decisions made by the Cabinet, and to carry out various other functions. All ministers are members of the council and are entitled to be styled [[The Honourable]] for life. The [[Governor-General of Australia|governor-general]] usually presides at council meetings, but in his or her absence another minister nominated as the [[Vice-President of the Executive Council]] presides at the meeting of the council.<ref>{{Cite web |title=Federal Executive Council Handbook 2021 |url=https://www.pmc.gov.au/sites/default/files/resource/download/executive-council-handbook-2021.pdf |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230303084148/https://www.pmc.gov.au/sites/default/files/resource/download/executive-council-handbook-2021.pdf |archive-date=3 March 2023 |access-date=2023-08-05 |website=Department of the Prime Minister and Cabinet of Australia}}{{cbignore|bot=medic}}</ref> Since 1 June 2022, the vice-president of the Federal Executive Council has been Senator [[Katy Gallagher]].<ref>{{Cite web |title=Senator Katy Gallagher, ACT (OpenAustralia.org) |url=https://www.openaustralia.org.au/senator/katy_gallagher/act |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230311033920/http://www.openaustralia.org.au/senator/katy_gallagher/act |archive-date=11 March 2023 |access-date=2023-08-05 |website=openaustralia.org.au |publisher=[[OpenAustralia Foundation]]}}{{cbignore|bot=medic}}</ref>

=== Cabinet ===
{{main|Cabinet of Australia}}
The Cabinet of Australia is the council of senior ministers, responsible to the Parliament. The ministers are appointed by the governor-general, on the advice of the prime minister, who serve at the former's pleasure.<ref name="Parliament of Australia-2023_1">{{Cite web |last= |first= |title=Cabinet |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/Cabinet |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230312021339/https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/Cabinet |archive-date=12 March 2023 |access-date=2023-08-05 |website=Parliament of Australia |language=en-AU}}{{cbignore|bot=medic}}</ref> Cabinet meetings are strictly private and occur once a week where vital issues are discussed and policy formulated. Outside the cabinet there is an outer ministry and also a number of junior ministers, called ''assistant ministers'' (formally ''parliamentary secretaries''), responsible for a specific policy area and reporting directly to a senior Cabinet minister.<ref name="Museum of Australian Democracy at Old Parliament House-2015">{{Cite web |last= |first= |date=2015-09-24 |title=The Cabinet |url=https://www.moadoph.gov.au/blog/the-cabinet |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626063125/https://www.moadoph.gov.au/blog/the-cabinet/ |archive-date=26 June 2023 |access-date=2023-08-05 |website=[[Museum of Australian Democracy]] at Old Parliament House |language=en}}{{cbignore|bot=medic}}</ref>

The Constitution of Australia does not explicitly mention Cabinet; it existing solely by convention, with its decisions not in and of themselves having legal force. However, it serves as the practical expression of the [[Federal Executive Council (Australia)|Federal Executive Council]], which is Australia's highest formal executive governmental body. In practice, the Federal Executive Council meets solely to endorse and give legal force to decisions already made by the Cabinet.<ref>{{Cite web |title=Why is it that the Prime Minister and Cabinet are not mentioned in the Australian Constitution? |url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/ |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626070043/https://peo.gov.au/understand-our-parliament/your-questions-on-notice/questions/why-is-it-that-the-prime-minister-and-cabinet-are-not-mentioned-in-the-australian-constitution/ |archive-date=26 June 2023 |access-date=2023-08-05 |website=Parliamentary Education Office |language=en}}{{cbignore|bot=medic}}</ref> All members of the Cabinet are members of the Executive Council. While the governor-general is nominal presiding officer, they almost never attends Executive Council meetings. A senior member of the Cabinet holds the office of vice-president of the Executive Council and acts as presiding officer of the Executive Council in the absence of the governor-general.<ref>{{Cite web |last= |first= |title=Federal Executive Council |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/Federal_Executive_Council |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230627030548/http://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/Federal_Executive_Council |archive-date=27 June 2023 |access-date=2023-08-05 |website=Parliament of Australia |language=en-AU}}{{cbignore|bot=medic}}</ref>

Until 1956 all members of the ministry were members of the Cabinet. The growth of the ministry in the 1940s and 1950s made this increasingly impractical, and in 1956 [[Robert Menzies]] created a two-tier ministry, with only senior ministers holding Cabinet rank, also known within parliament as the [[front bench]]. This practice has been continued by all governments except the [[Whitlam government]].<ref name="Museum of Australian Democracy at Old Parliament House-2015" />

When the non-Labor parties are in power, the prime minister makes all Cabinet and ministerial appointments at their own discretion, although in practice they consult with senior colleagues in making appointments. When the [[Liberal Party of Australia|Liberal Party]] and its predecessors (the [[Nationalist Party of Australia|Nationalist Party]] and the [[United Australia Party]]) have been in coalition with the [[National Party of Australia|National Party]] or its predecessor the [[National Party of Australia|Country Party]], the leader of the junior Coalition party has had the right to nominate their party's members of the Coalition ministry, and to be consulted by the Prime Minister on the allocation of their portfolios.<ref name="Parliament of Australia-2023_1" />

When [[Australian Labor Party|Labor]] first held office under [[Chris Watson]], Watson assumed the right to choose members of his Cabinet. In 1907, however, the party decided that future Labor Cabinets would be elected by the members of the parliamentary Labor Party, (the [[Australian Labor Party Caucus|Caucus]]) and the prime minister would retain the right to allocate portfolios. This practice was followed until 2007. Between 1907 and 2007, Labor Prime Ministers exercised a predominant influence over who was elected to Labor ministries, although the leaders of the party factions also exercised considerable influence.<ref>{{Cite web |last= |first= |title=The Ministry |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/The_Ministry |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230428104209/http://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7/HTML/Chapter2/The_Ministry |archive-date=28 April 2023 |access-date=2023-08-05 |website=aph.gov.au |language=en-AU}}{{cbignore|bot=medic}}</ref> Prior to the [[2007 Australian general election|2007 general election]], the then Leader of the Opposition, [[Kevin Rudd]], said that he and he alone would choose the ministry should he become prime minister. His party won the election and he chose the ministry, as he said he would.<ref>{{Cite news |last=Worsley |first=Ben |date=11 September 2007 |title=Rudd seizes power from factions |work=[[ABC News (Australia)|ABC News]] |publisher=[[Australian Broadcasting Corporation]] |url=http://www.abc.net.au/news/stories/2007/09/29/2046939.htm |archive-url=https://webarchive.nla.gov.au/awa/20071015011332/http://pandora.nla.gov.au/pan/76826/20071014-2203/www.abc.net.au/news/stories/2007/09/29/2046939.html |archive-date=2007-10-15}}{{cbignore|bot=medic}}</ref> However, in return for changes restricting the ability of Caucus to select the prime minister, in 2013 the right of Caucus to choose the ministry was restored.<ref>{{Cite web |last=Grattan |first=Michelle |date=2013-07-08 |title=No more coups against Labor PMs under new Rudd rules |url=https://theconversation.com/no-more-coups-against-labor-pms-under-new-rudd-rules-15887 |access-date= |website=The Conversation |language=en-US}}</ref> While Caucus rules are not public,<ref>{{Cite web |last=Gauja |first=Anika |date=2012-02-26 |title=Labor leadership spill: the rules of the game |url=https://theconversation.com/labor-leadership-spill-the-rules-of-the-game-5575 |access-date= |website=The Conversation |language=en-US}}</ref> the ''[[Sydney Morning Herald]]'' has reported that ministerial positions are allocated to the [[Labor Left|Left]] and [[Labor Right|Right]] factions on a proportional basis according to their representation in Parliament.<ref name=":0">{{Cite web |last=Massola |first=James |date=2021-02-14 |title=What are Labor’s factions and who’s who in the Left and Right? |url=https://www.smh.com.au/politics/federal/what-are-labor-s-factions-and-who-s-who-in-the-left-and-right-20210210-p5718j.html |access-date= |website=The Sydney Morning Herald |language=en}}</ref> The Left selects their ministers nationally, whilst the Right assigns ministers according to state based quotas.<ref name=":0" />

The cabinet meets not only in Canberra but also in state capitals, most frequently Sydney and Melbourne. Kevin Rudd was in favour of the Cabinet meeting in other places, such as major regional cities.<ref>{{Cite news |date=21 November 2007 |title=Cutting bureaucracy won't hurt services: Rudd |work=[[ABC News (Australia)|ABC News]] |publisher=[[Australian Broadcasting Corporation]] |url=http://www.abc.net.au/news/stories/2007/11/21/2097424.htm |access-date=28 November 2007 |archive-url=https://web.archive.org/web/20071123120653/http://www.abc.net.au:80/news/stories/2007/11/21/2097424.htm |archive-date=2007-11-23}}</ref> There are [[Commonwealth Parliament Offices, Sydney|Commonwealth Parliament Offices]] in each state capital, with those in Sydney located in [[1 Bligh Street]].<ref>{{Cite web |date=2020-09-30 |title=Commonwealth Parliament Offices (CPOs) |url=https://maps.finance.gov.au/commonwealth-parliament-offices-cpos |url-status=live |archive-url=http://webarchive.nla.gov.au/awa/20230626051933/https://maps.finance.gov.au/commonwealth-parliament-offices-cpos |archive-date=26 June 2023 |access-date=5 August 2023 |website=Ministerial and Parliamentary Services}}{{cbignore|bot=medic}}</ref>

== The Judicature ==
{{Main|Judiciary of Australia|Australian court hierarchy}}
[[File:High Court of Australia from lake (85856224).jpg|thumb|High Court building, view from [[Lake Burley Griffin]]]]
As a federation, in Australia judicial power is exercised by both federal and state courts. However, unlike the [[UK law|UK's multiple legal systems]] there is only one legal system and like [[Law of Canada|Canada]] and unlike the [[US law|US]] there is only one common law of the nation, rather than a common law for each state.<ref>{{Cite AustLII|litigants=Lange v Australian Broadcasting Corporation|link=Lange v Australian Broadcasting Corporation|source=HCA|num=25|year=1997|parallelcite=(1997) 189 CLR 520, 563}}</ref><ref>{{Cite journal |last=Zines |first=Leslie |date=2004 |title=The Common Law in Australia: Its Nature and Constitutional Significance |url=https://classic.austlii.edu.au/au/journals/FedLawRw/2004/16.html |journal=Federal Law Review |volume=32 |issue=3 |pages=337–355 |doi=10.22145/flr.32.3.1 |s2cid=211152623 |via=[[Austlii]]|hdl=1885/315561 |hdl-access=free }}</ref> Additionally, unlike Canada and the US, there is no distinct federal common law.<ref>{{Citation |last=Leeming |first=Mark |title=Common Law Within Three Federations |date=2007-11-08 |ssrn=1027508 |url=https://papers.ssrn.com/abstract=1027508 |type=SSRN Scholarly Paper |access-date=2023-12-11 |place=Rochester, NY |language=en |institution=University of Sydney}}</ref>

Federal judicial power is vested in the [[High Court of Australia]] and such other federal courts created by the Parliament, including the [[Federal Court of Australia]], the [[Family Court of Australia]], and the [[Federal Circuit Court of Australia]]. Additionally, the Parliament has the power to enact laws which vest federal authority in state courts.<ref>Robert French, '[http://www.hcourt.gov.au/assets/publications/speeches/current-justices/frenchcj/frenchcj15oct12.pdf Two Chapters about Judicial Power] {{Webarchive|url=https://web.archive.org/web/20190418023702/http://www.hcourt.gov.au/assets/publications/speeches/current-justices/frenchcj/frenchcj15oct12.pdf|date=18 April 2019}}', speech given at the Peter Nygh Memorial Lecture, 15 October 2012, Hobart, p 3.</ref> Since the Constitution requires a separation of powers at the federal level, only courts may exercise federal judicial power; and conversely, non-judicial functions cannot be vested in courts.<ref>{{Cite AustLII|litigants=R v Kirby; Ex parte Boilermakers' Society of Australia|link=R v Kirby; Ex parte Boilermakers' Society of Australia|source=HCA|num=10|year=1956|parallelcite=(1956) 94 CLR 254}}</ref>

State judicial power is exercised by each state's supreme court, and such other courts and tribunals created by the state parliaments.

The [[High Court of Australia]] is the [[supreme court]] in the [[Australian court hierarchy]] and the final [[court of appeal]] in Australia. It has both original and appellate jurisdiction, has the power of [[judicial review]] over laws passed by the Parliament of Australia and the parliaments of the [[States and territories of Australia|states]], and interprets the Constitution of Australia. The High Court is mandated by [[Section 71 of the Constitution of Australia|section 71 of the Constitution]], which vests in it the [[judiciary|judicial power]] of the Commonwealth of Australia. The High Court was constituted by the [[Judiciary Act 1903|''Judiciary Act 1903'' (Cth)]]. The High Court is composed of seven Justices: the [[Chief Justice of Australia]], presently [[Stephen Gageler]], and six other Justices.

The state supreme courts are also considered to be superior courts, those with unlimited jurisdiction to hear disputes and which are the pinnacle of the court hierarchy within their jurisdictions. They were created by means of the constitutions of their respective states or the self government Acts for the [[Australian Capital Territory|ACT]] and the [[Northern Territory]]. Appeals may be made from state supreme courts to the [[High Court of Australia]].

Inferior courts are secondary to superior courts. Their existence stems from legislation and they only have the power to decide on matters which Parliament has granted them. Decisions in inferior courts can be appealed to the superior court in that area, and then to the High Court of Australia.

Until the passage of the ''[[Australia Act 1986]]'', by the Australian and UK parliaments, some Australian cases could be referred to the British [[Judicial Committee of the Privy Council]] for final appeal. With this act, Australian law was made fully independent, and the [[High Court of Australia]] was confirmed as the highest court of appeal. The theoretical possibility of the British Parliament enacting laws to override the Australian Constitution was also removed.<ref>{{cite web |date=4 December 1985 |title=Australia Act 1986 |url=https://www.legislation.gov.au/Details/C2004A03181 |url-status=live |archive-url=https://webarchive.nla.gov.au/awa/20170223181529/https://www.legislation.gov.au/Details/C2004A03181 |archive-date=2017-02-23 |work=Federal Register of Legislation |publisher=[[Attorney-General's Department (Australia)]] |via=[[National Library of Australia]]}}{{cbignore|bot=medic}}</ref>

==Elections==
{{Main|Australian electoral system|Divisions of the Australian House of Representatives|}}
[[File:Julia Gillard August 2011.jpg|thumb|[[Julia Gillard]], [[Prime Minister of Australia]] from 2010 to 2013 and the first female Prime Minister of the country.]]
Federal elections are held at least once every three years.{{Efn|The timing of elections is related to the dissolution or expiry of the House of Representatives, which extends for a maximum period of three years from the date of its first sitting, not the date of the election of its members. The house can be dissolved and a new election called at any time. In [[Chronology of Australian federal parliaments|12 out of 41 parliaments]] since Federation, more than three years have elapsed between elections. There is a complex formula for determining the date of such elections, which must satisfy section 32 of the Constitution of Australia and sections 156–8 of the Commonwealth Electoral Act 1918. These provisions do not allow an election to be held less than 33 days or more than 68 days after the dissolution of the House of Representatives. See [[2010 Australian federal election]] for an example of how the formula applies in practice.}} The [[Prime Minister of Australia|prime minister]] can advise the governor-general to call an election for the House of Representatives at any time, but Senate elections can only be held within certain periods prescribed in the [[Australian Constitution]]. Although it is possible to hold elections for the House and Senate separately, it is the convention to hold simultaneous elections for both houses; every national election since [[1974 Australian federal election|1974]] has been for both the House and the Senate.

[[Compulsory voting|Voting has been compulsory]] federally since 1924, except for Indigenous Australians. All restrictions on Indigenous people's right to vote were removed in 1962, but this right remained optional until both voting and enrolment became compulsory in 1984. Federal enrolment for non-Indigenous Australians has been compulsory since 1911.<ref>{{Cite web |last=Evans |first=Time |date=16 January 2006 |title=Compulsory voting in Australia |url=https://www.aec.gov.au/About_AEC/Publications/voting/ |access-date= |website=[[Australian Electoral Commission]] |language=en-AU}}</ref><ref>{{Cite web |last= |first= |date=16 May 2023 |title=Indigenous Australians’ right to vote |url=https://www.nma.gov.au/defining-moments/resources/indigenous-australians-right-to-vote |access-date= |website=[[National Museum of Australia]] |language=en}}</ref> Compulsory voting laws are actively enforced, with a failure to vote attracting a $20 fine.<ref>{{Cite news |last=Boucher |first=Dinah Lewis |date=2022-05-12 |title=Do I really have to vote? Can I draw on my ballot paper? Here are some things worth knowing before you cast your vote |url=https://www.abc.net.au/news/2022-05-12/do-i-have-to-vote-how-can-i-vote-early-federal-election/101022592 |access-date= |work=[[ABC News (Australia)]] |language=en-AU}}</ref> All non-Indigenous [[Women's suffrage|women gained the right to vote]] in federal elections in 1902 and in all states by 1908.<ref>{{Cite web |last= |first= |title=Womens Suffrage in Australia |url=https://www.aph.gov.au/Visit_Parliament/Art/Stories_and_Histories/Womens_Suffrage_in_Australia |access-date=2024-10-29 |website=[[Parliament of Australia]] |language=en-AU}}</ref>

All seats in the House of Representatives are contested in each election. Members are elected using [[Instant-runoff voting|preferential voting]], in which the winning candidate obtains over 50% of votes after distribution of preferences; therefore, preference flows from lower-polling candidates are frequently significant in electoral outcomes. Senate elections are contested by half the senators from each state, except in the case of a double dissolution where all senators contest the election; senators representing the territories are elected and sworn into office simultaneously with the House of Representatives rather than the rest of the Senate. All senators are elected using the [[single transferable voting]] system of proportional representation, which has resulted in a greater presence of minor parties in the Senate. With the exception of a three-year period from 2005 to 2008, no party or coalition has held a majority in the Senate since 1981; this has required governments to frequently seek the support of minor parties or independent senators holding the [[Balance of power (parliament)|balance of power]] in order to secure their legislative agenda.

Because the Senate's system of single transferable voting requires a lower quota than the House in order to obtain a seat, minor parties have often focused their election efforts on the upper house. This is true also at state level (only the two territories and Queensland are [[unicameral]]). Historically it has been comparatively rarer for minor parties and independents to win seats in the House of Representatives, although the size of the crossbench has been on an increasing trend since the [[1990 Australian federal election|1990 federal election]] The most recent Australian federal election, which took place on [[2022 Australian federal election|21 May 2022]], saw the election of a historically large crossbench in the House of Representatives consisting of six minor party members and ten independents.

==State and local government==
{{Main|Electoral systems of the Australian states and territories|Local government in Australia}}
[[File:States of Australia (governing political parties).svg|thumb|Map showing the jurisdictions of Australia and their governing political parties as of October 2024.
{{legend|#cd1f26|Labor}}{{legend|#17407e|Coalition}}]]
[[File:Australia Color Map.svg|thumb|States and territories of Australia]]
[[States and territories of Australia|Australia's six states and the two largest territories]] are structured within a political framework similar to that of the Commonwealth. Each state has its own bicameral parliament, with the exception of Queensland and the two territories, whose parliaments are unicameral. Each state has a [[Governors of the Australian states|governor]], who undertakes a role equivalent to that of the governor-general at the federal level, and a [[Premiers and chief ministers of the Australian states and territories|premier]], who is the head of government and is equivalent to the prime minister. Each state also has its own supreme court, from which appeals can be made to the High Court of Australia.

State and territory elections occur every four years using [[Fixed-term election|fixed terms]] (except for Tasmania, where the premier decides the date of the election).<ref>{{Cite web |last=Muller |first=Damon |date=22 August 2022 |title=So when is the next federal election? A quick guide |url=https://www.aph.gov.au/About_Parliament/Parliamentary_departments/Parliamentary_Library/pubs/rp/rp2223/Quick_Guides/WhenIsTheNextElection2022 |website=Parliament of Australia |series=Research paper series, 2022–23 |language=en-AU}}</ref>

[[Thomas Playford IV|Thomas Playford]] served as [[Premier of South Australia]] and leader of the Liberal and Country League (LCL) from 5 November 1938 to 10 March 1965 (26 years). [[List of Australian heads of government by time in office#Historical heads of government|it was the longest term of any elected government leader in Australian history]].

Labor winning government in New South Wales on [[2023 New South Wales state election|25 March 2023]] marked the second time in history that the [[Australian Labor Party]] gained control of the entirety of [[Mainland Australia]] at the federal and mainland state levels simultaneously (leaving [[Tasmania]] as the only state with a Liberal government), a feat that had last been achieved in 2007.<ref name="Slade 2023">{{cite web | last=Slade | first=Lucy | title=Mainland Australia turns red after NSW Labor victory | website=9News | date=March 25, 2023 | url=https://www.9news.com.au/national/nsw-election-2023-mainland-australia-turn-red-as-labor-wins-nsw-election/50a42d1d-2374-479f-837d-c57bbdf28b71 | access-date=April 5, 2023}}</ref><ref name="Bongiorno 2023">{{cite web | last=Bongiorno | first=Frank | title=Australia is now almost entirely held by Labor – but that doesn't necessarily make life easier for leaders | website=The Conversation | date=March 27, 2023 | url=http://theconversation.com/australia-is-now-almost-entirely-held-by-labor-but-that-doesnt-necessarily-make-life-easier-for-leaders-202049 | access-date=April 5, 2023}}</ref> This would last until [[2024 Northern Territory general election|24 August 2024]] when Labor lost government in the Northern Territory to the [[Country Liberal Party]] (CLP) opposition. The [[Coalition (Australia)|Liberal–National Coalition]] has never achieved this feat (control of the entirety of [[Mainland Australia]] at the federal and mainland state levels simultaneously) as of 2024.

Queensland is regarded as comparatively [[Conservatism in Australia|conservative]].<ref>{{Cite book|first=Margo|last=Daly|year=2003|title=The Rough Guide To Australia|url=https://archive.org/details/roughguidetosydn0000daly|url-access=registration|publisher=Rough Guides Ltd|isbn=9781843530909|page=397}}</ref><ref>{{Cite book|first=Deborah|last=Penrith|year=2008|title=Live & Work in Australia|publisher=Crimson Publishing|isbn=9781854584182|page=478}}</ref><ref>{{cite web|author=Georgia Waters |url=http://www.brisbanetimes.com.au/federal-election/face-it-queensland-were-conservative-20100823-13ftu.html |title=Why Labor struggles in Queensland |date=23 August 2010 |publisher=Brisbanetimes.com.au |access-date=5 December 2012}}</ref><ref>{{cite news| url=https://www.bbc.co.uk/news/10410929 | publisher=BBC News | title=Australia ready for first female leader | date=25 June 2010}}</ref><ref name="Megalogenis-2010_1">George Megalogenis, [https://books.google.com/books?id=BHQzwqY1b90C&pg=PA121 "The Green and the Grey"], ''Quarterly Essay'', Vol. 40, 2010, p69.</ref> Victoria and the Australian Capital Territory are regarded as comparatively [[left-wing politics|left of centre]].<ref name="Megalogenis-2010_1"/><ref>{{cite news| url=http://www.theage.com.au/federal-election/victoria-the-leftleaning-state-20100807-11pi9.html | location=Melbourne | work=The Age | title=Victoria: the left-leaning state | date=8 August 2010}}</ref><ref>{{cite news| url=http://www.theage.com.au/victoria/state-election-2010/victoria-not-likely-to-lose-its-mantle-as-the-state-most-progressive-20101128-18cee.html | location=Melbourne | work=The Age | title=Victoria not likely to lose its mantle as the state most progressive | date=29 November 2010}}</ref><ref name="Megalogenis-2010_2">{{cite news| url=http://www.theaustralian.com.au/national-affairs/poll-divides-the-nation-into-three-zones/story-fn59niix-1225908617129 | first=George | last=Megalogenis | title=Poll divides the nation into three zones | date=23 August 2010 | work=The Australian}}</ref> New South Wales, the largest state by population, as well as South Australia have often been regarded as politically moderate [[bellwether]] states.<ref name="Megalogenis-2010_2"/><ref name="Megalogenis-2010_1"/> Western Australia, by contrast, tends to be more politically volatile; regarded as the most conservative state during the 2000–10s,<ref>{{cite web |last1=Mast |first1=Natalie |title=State of the states: why Labor's fortunes are on the rise in Western Australia |url=https://theconversation.com/state-of-the-states-why-labors-fortunes-are-on-the-rise-in-western-australia-59459 |website=The Conversation |date=16 June 2016 |access-date=22 May 2022}}</ref> it has lately swung to rank amongst the most left-leaning states in the country. It is also known for historical secessionist sentiments.<ref>{{cite news| url=https://www.abc.net.au/news/2021-03-14/the-wa-election-has-left-the-liberal-party-in-ruins-analysis/13244530 | title=The WA election has left the Liberals decimated and in the wilderness, facing a long road back | date=14 March 2021 | work=ABC}}</ref><ref>{{cite news| url=https://www.watoday.com.au/politics/federal/perth-turns-red-as-labor-delivers-election-bloodbath-in-wa-20220521-p5andp.html | title=Perth turns red as Labor delivers election bloodbath in WA | date=22 May 2022 | work= WAtoday}}</ref>

Local government in Australia is the lowest tier of government. Local governments are subject to the relevant [[states and territories of Australia|states and territories]]. There is only one level of local government in Australia; with none of the distinctive local government types seen in other [[English-speaking world|anglophone]] nations. Most local governments within the states have equivalent powers to each other; styles such as ''shire'' or ''city'' have only historical meaning.

==Ideology in Australian politics==
{{See also|Conservatism in Australia|Liberalism in Australia|Socialism in Australia}}
[[File:Gough Whitlam at the Lodge 1974.jpg|thumb|left|243x243px|[[Gough Whitlam]], the longest-serving parliamentary leader of the [[Australian Labor Party]]]]
[[Image:Portrait_Menzies_1950s.jpg|thumb|right|[[Sir Robert Menzies]], founder of the [[Liberal Party of Australia]], and Australia's longest-serving Prime Minister|234x234px]]
The Australian party system has been described by political scientists as more ideologically driven than other similar anglophone countries such as the [[United States]] and [[Canada]].<ref>{{cite book |last1=Woodward |first1=Dennis |last2=Parkin |first2=Andrew |last3=Summers |first3=John |title=Government, Politics, Power and Policy in Australia |date=2010 |publisher=Pearson Australia |edition=9th}}</ref> In early Australian political history, class interests played a significant role in the division between the then-[[democratic socialism|democratic socialist]] [[Australian Labor Party]] and a series of anti-Labor parties drawing on the [[Liberalism in Australia|liberal]] and [[Conservatism in Australia|conservative]] traditions (the predecessors of the modern [[Coalition (Australia)|Coalition]] of the [[Liberal Party of Australia|Liberals]] and [[National Party of Australia|Nationals]]).<ref>{{cite journal |last1=Johanson |first1=Katya |last2=Glow |first2=Hilary |title=Culture and Political Party Ideology in Australia |journal=The Journal of Arts Management, Law, and Society |date=2008 |volume=38 |issue=1 |pages=37–50|doi=10.3200/JAML.38.1.37-50 |s2cid=145352620 }}</ref><ref>{{cite journal |last1=Kelley |first1=Jonathan |last2=McAllister |first2=Ian |title=Class and Party in Australia: Comparison with Britain and the USA |journal=The British Journal of Sociology |date=1985 |volume=36 |issue=3 |pages=383–420|doi=10.2307/590458 |jstor=590458 }}</ref>

In contemporary Australian political culture, the Liberal and National parties are considered centre-right and the Australian Labor Party is considered centre-left.<ref>{{Cite web |last=Bongiorno |first=Frank |title=Did Australia just make a move to the left? |url=http://theconversation.com/did-australia-just-make-a-move-to-the-left-183611 |access-date=2022-05-31 |website=The Conversation |date=23 May 2022 |language=en}}</ref> [[Conservatism in Australia|Australian conservatism]] is largely represented by the Liberal Party, along with [[Liberalism in Australia|Australian liberalism]].{{citation needed|date=May 2025}} The Labor Party categorises itself as [[social democracy|social democratic]],<ref>[http://d3n8a8pro7vhmx.cloudfront.net/australianlaborparty/pages/121/attachments/original/1365135867/Labor_National_Platform.pdf?1365135867 Australian Labor Party National Platform] {{webarchive|url=https://web.archive.org/web/20150923182841/http://d3n8a8pro7vhmx.cloudfront.net/australianlaborparty/pages/121/attachments/original/1365135867/Labor_National_Platform.pdf?1365135867|date=23 September 2015}}. Retrieved 11 December 2014</ref> although it has pursued a liberal economic and social policy since the prime ministership of [[Bob Hawke]].<ref>Lavelle, A. The Death of Social Democracy. 2008. Ashgate Publishing.</ref><ref>{{cite book |last1=Humphrys |first1=Elizabeth |title=How labour built neoliberalism : Australia's accord, the labour movement and the neoliberal project |date=2018 |publisher=Brill |isbn=978-90-04-38346-3}}</ref>

Parliamentary Labor Party members such as [[Andrew Leigh]] have argued that the ALP should be reclassified as [[social liberalism|social liberal]].<ref>{{cite news |last1=Leigh |first1=Andrew |title=Social liberalism fits Labor |url=https://www.thesaturdaypaper.com/opinion/topic/2019/06/29/social-liberalism-fits-labor/15617304008366 |access-date=15 July 2019 |work=The Saturday Paper |date=29 June 2019}}</ref><ref>{{cite news |last1=Leigh |first1=Andrew |title=Liberals are conservatives while Labor is the true party of Alfred Deakin |url=https://www.theaustralian.com/national-affairs/opinion/liberals-are-conservatives-while-labor-is-the-true-party-of-alfred-deakin/news-story/396a97b83d76c5bbd0b60c5d048e7cea |access-date=15 July 2019 |work=The Australian }}{{Dead link|date=January 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The Labor Party still maintains its socialist objective in its constitution; however, it is seen by some as an ideological [[anachronism]] within the party.<ref>{{cite news |title=Fact check: Are Labor's policies socialist? |url=https://www.abc.net.au/news/2017-09-20/fact-check3a-are-labor27s-policies-socialist3f/8948552 |access-date=15 July 2019 |publisher=ABC News |date=20 September 2017 |language=en-AU}}</ref><ref>{{cite news |last1=Johnson |first1=Carol |title=Reviewing an anachronism? Labor to debate future of socialist objective |url=https://theconversation.com/reviewing-an-anachronism-labor-to-debate-future-of-socialist-objective-45233 |access-date=15 July 2019 |work=The Conversation |language=en}}</ref>

In recent decades there has been a marked shift amongst the Australian electorate in providing their first preference votes to candidates not belonging to either of the two major parties. At the [[2022 Australian federal election|2022 federal election]] 31% gave their preference to a non-major party candidate.<ref>{{citation|url=https://www.abc.net.au/news/elections/federal/2022/results/party-totals|title=Party Totals|publisher=[[Australian Broadcasting Corporation]]|access-date=2022-12-15|author=Antony Green}}</ref>

==Political parties==
{{Main|List of political parties in Australia|List of historical political parties in Australia}}
Organised, national political parties have dominated Australia's political landscape since federation. The late 19th century saw the rise of the Australian Labor Party, which represented organised workers.<ref>{{Cite web|url=https://www.nma.gov.au/defining-moments/resources/alp-forms|title=ALP forms|website=[[National Museum of Australia]]|access-date=23 January 2025}}</ref> Opposing interests coalesced into two main parties: a centre-right party with a base in business and the middle classes that has been predominantly conservative and moderate, now the Liberal Party of Australia;<ref>{{Cite web|url=https://www.nma.gov.au/defining-moments/resources/liberal-party-forms|title=Liberal party forms|website=National Museum of Australia|access-date=23 January 2025}}</ref> and a rural or agrarian conservative party, now the National Party of Australia.<ref>{{Cite web|url=https://www.nma.gov.au/defining-moments/resources/country-party|title=Country Party|website=National Museum of Australia|access-date=23 January 2025}}</ref>

Australian politics has mostly been a ''[[de facto]]'' [[two-party system]], as a result of the long-standing coalition between the Liberal Party and National Party. The [[Australian Greens|Greens]] are major 4th party with a high presence in the senate. Additionally there are also other groups like [[Teal independents|Teal Independents]] and other [[List of political parties in Australia|minor parties]] in Parliament. The coalition also exists at state level in all states except [[Western Australia|WA]]. The two parties are official merged as the [[Liberal National Party of Queensland|LNP]] in [[Queensland]] and the separate [[Country Liberal Party|CLP]] competes in the [[Northern Territory]], with is affiliated with both coalition parties.<ref>{{Cite web|url=https://peo.gov.au/understand-our-parliament/your-questions-on-notice/questions/define-the-two-party-system|title=Define the two-party system|access-date=23 January 2025|website=Parliamentary Education Office}}</ref> Internal party discipline has historically been tight, unlike the situation in other countries such as the United States.<ref name="3.">{{Cite web|url=https://www.aph.gov.au/About_Parliament/Senate/Practice_and_Procedure/platparl/c03|title=3. The electoral and party systems|website=Parliament of Australia|access-date=23 January 2025}}</ref> Australia's political system has not always been a two-party system. In the early years of Federation, the emerging Australian Parliament was a "substantial arena" of various fragmented political parties, and it was not until 1909, as parliamentary politics became increasingly bipolar, that the merger occurred and the party system coalesced into the Labor Party and a non-Labor bloc.<ref name="3."></ref>

The [[Australian Labor Party|Australian Labor Party (ALP)]] is a [[Social democracy|social democratic]] party. It is a left leaning party with tendency towards social welfare and government assistance programs. It was founded by the [[Australian labour movement]] and broadly represents the urban working and middle classes.

The [[Liberal Party of Australia]] is a party of the centre-right which broadly represents businesses, the middle classes and many rural people. Until May 2025, its coalition partner at national level was the [[National Party of Australia]], formerly known as the Country Party, a conservative party which represents rural interests. These two parties were collectively known as the federal [[Coalition (Australia)|Coalition]]. In only Queensland, the two parties have officially merged to form the [[Liberal National Party of Queensland|Liberal National Party]], and in the Northern Territory, the [[Country Liberal Party]] has associate status with both the Liberals and the Nationals.

===Minor/Third parties===
While there are a small number of other minor political parties that have achieved parliamentary representation, the Labor Party and the Coalition dominate organised politics throughout Australia. Historically, they have positioned themselves as opponents or ‘watchdogs’ of the major parties,<ref>{{Cite web|last=Ghazarian|first=Zareh|url=https://www.aph.gov.au/~/media/359C0D9F778D4F9D8572BA84276BB1D6.ashx|title=Small Parties, Big Changes: The Evolution of Minor Parties Elected to the Australian Senate|format=PDF|website=Parliament of Australia|page=1}}</ref> although since the 1980s, their political representation has been increasing: in the [[1980 Australian federal election|1980 federal election]], the combined primary votes of minor parties and independents accounted for just 8%; by [[2022 Australian federal election|2022]], this figure had risen to 32%, the highest ever recorded.<ref>{{Cite web|last1=Browne|first1=Bill|last2=Le|first2=Minh Ngoc|url=https://australiainstitute.org.au/post/the-steady-decline-of-voters-choosing-the-major-parties-is-reshaping-australia-politics/|title=The steady decline of voters choosing the major parties is reshaping Australian politics|website=[[The Australia Institute]]|date=24 October 2024|access-date=23 January 2025}}</ref> 

Minor parties in Australian politics include a [[green politics|green]] party, the [[Australian Greens]] (the largest of the minor parties since 2004); a [[Centrism|centrist]] party, [[Centre Alliance]]; a [[Nationalism|nationalist]] party, [[Pauline Hanson's One Nation]]; and a [[Right-wing politics|right-wing]] agrarian party, [[Katter's Australian Party]]. Other significant parties in recent years have included the [[Clive Palmer]] led [[United Australia Party (2013)|United Australia Party]] (not to be confused with the historical incarnation that was the predecessor to the Liberal party) and the [[social conservatism|socially conservative]] [[Family First Party]], among others. Historically significant parties have included the [[United Australia Party]], the [[Democratic Labor Party (Australia, 1955)|Democratic Labor Party]] (1950s–1970s), the [[Communist Party of Australia]], the socially liberal [[Australian Democrats]] (1970s–1990s) among others.

A notable election result for a third party other than Labor or the Liberal, Nationals, was in the [[1998 Queensland state election]]. Where One Nation with nearly 23% of the vote, gained the highest percentage of the vote than any other third party (i.e. not Labor, [[Coalition (Australia)|Coalition]], or independents) at the state or territory level since Federation 1901. This was also the only election at which a third party gained more votes than both the [[Liberal Party of Australia (Queensland Division)|Liberal Party]] and the [[National Party of Australia – Queensland|National Party]] considered separately. This was One Nation's highest ever recorded election result in its history.

At the [[2010 Tasmanian state election]], the Greens secured 21.6% of the primary vote. This is the highest vote the Greens has ever recorded in any state or federal election as of 2024. 

A collection of climate conscious and [[economically liberal]] independents commonly referred to as the [[Teal independents|teals]] were elected in the 2022 election, taking many seats previously held by moderate Liberal Party members.<ref>{{Cite news |last=Wahlquist |first=Calla |date=2022-05-23 |title=Teal independents: who are they and how did they upend Australia's election? |language=en-GB |work=The Guardian |url=https://www.theguardian.com/australia-news/2022/may/23/teal-independents-who-are-they-how-did-they-upend-australia-election |access-date=2023-12-12 |issn=0261-3077}}</ref><ref>{{Cite web |last=Kenny |first=Mark |author-link=Mark Kenny (journalist) |date=2023-11-12 |title=Halfway through their term, the 'teal' MPs look here to stay – and may present a huge challenge in 2025 |url=http://theconversation.com/halfway-through-their-term-the-teal-mps-look-here-to-stay-and-may-present-a-huge-challenge-in-2025-216528 |access-date=2023-12-01 |website=[[The Conversation (website)|The Conversation]] |language=en-US}}</ref>

==Timeline==
Since federation, there have been [[List of Prime Ministers of Australia|31 prime ministers of Australia]]. The longest-serving prime minister was [[Sir Robert Menzies]] of the Liberal Party, who served for 19 years from 1939 to 1941, and again from 1949 to 1966. The only other prime minister to serve for longer than a decade was [[John Howard]], also of the Liberal Party, who led for more than 11 years from 1996 to 2007. The Coalition and its direct predecessors have governed at the federal level for a large majority of Australia's history since federation: 30,791 days as compared to Labor's {{formatnum:{{#expr:
{{age in days|day1=27|month1=4 |year1=1904|month2=8 |day2=18|year2=1904}} + 1 + <!-- 3: Chris Watson -->
{{age in days|day1=13|month1=11|year1=1908|month2=6 |day2=2 |year2=1909}} + 1 + <!-- 5: Andrew Fisher -->
{{age in days|day1=29|month1=4 |year1=1910|month2=6 |day2=24|year2=1913}} + 1 + <!--    Andrew Fisher -->
{{age in days|day1=17|month1=9 |year1=1914|month2=10|day2=27|year2=1915}} + 1 + <!--    Andrew Fisher -->
{{age in days|day1=22|month1=10|year1=1929|month2=1 |day2=6 |year2=1932}} + 1 + <!-- 9: James Scullin -->
{{age in days|day1=7 |month1=10|year1=1941|month2=7 |day2=5 |year2=1945}} + 1 + <!-- 14: John Curtin -->
{{age in days|day1=6 |month1=7 |year1=1945|month2=7 |day2=13|year2=1945}} + 1 + <!-- 15: Frank Forde -->
{{age in days|day1=13|month1=7 |year1=1945|month2=12|day2=19|year2=1949}} + 1 + <!-- 16: Ben Chifley -->
{{age in days|day1=5 |month1=12|year1=1972|month2=11|day2=11|year2=1975}} + 1 + <!-- 21: Gough Whitlam -->
{{age in days|day1=11|month1=3 |year1=1983|month2=12|day2=20|year2=1991}} + 1 + <!-- 23: Bob Hawke -->
{{age in days|day1=20|month1=12|year1=1991|month2=3 |day2=11|year2=1996}} + 1 + <!-- 24: Paul Keating -->
{{age in days|day1=3 |month1=12|year1=2007|month2=6 |day2=24|year2=2010}} + 1 + <!-- 26: Kevin Rudd -->
{{age in days|day1=24|month1=6 |year1=2010|month2=6 |day2=27|year2=2013}} + 1 + <!-- 27: Julia Gillard -->
{{age in days|day1=27|month1=6 |year1=2013|month2=9 |day2=18|year2=2013}} + 1 + <!-- Kevin Rudd -->
{{age in days|day1=23|month1=5 |year1=2022}} <!-- 31: Anthony Albanese -->
}}}} days.

===Prime ministers' parties by time in office===
*[[Liberal Party of Australia]] – {{#expr:
{{age in days|month1=12|day1=09|year1=1949|month2=1|day2=26|year2=1966}} + 1 + <!-- 16: Robert Menzies -->
{{age in days|month1=1|day1=26|year1=1966|month2=12|day2=19|year2=1967}} + 1 + <!-- 17: Harold Holt -->
{{age in days|month1=1|day1=10|year1=1968|month2=3|day2=10|year2=1971}} + 1 + <!-- 19: John Gorton -->
{{age in days|month1=3|day1=10|year1=1971|month2=12|day2=5|year2=1972}} + 1 + <!-- 20: William McMahon -->
{{age in days|month1=11|day1=11|year1=1975|month2=3|day2=11|year2=1983}} + 1 + <!-- 22: Malcolm Fraser -->
{{age in days|month1=3|day1=11|year1=1996|month2=12|day2=3|year2=2007}} + 1 + <!-- 25: John Howard -->
{{age in days|month1=9 |day1=18|year1=2013|month2=9|day2=15|year2=2015}} + 1 + <!-- 28: Tony Abbott -->
{{age in days|month1=9 |day1=15|year1=2015|month2=8|day2=24|year2=2018}} + 1 +  <!-- 29: Malcolm Turnbull -->
{{age in days|month1=8|day1=24|year1=2018|month2=5|day2=23|year2=2022}} <!-- 
30: Scott Morrison -->
}} days
*[[Australian Labor Party]] – {{#expr:
{{age in days|day1=27|month1=4 |year1=1904|month2=8 |day2=18|year2=1904}} + 1 + <!-- 3: Chris Watson -->
{{age in days|day1=13|month1=11|year1=1908|month2=6 |day2=2 |year2=1909}} + 1 + <!-- 5: Andrew Fisher -->
{{age in days|day1=29|month1=4 |year1=1910|month2=6 |day2=24|year2=1913}} + 1 + <!--    Andrew Fisher -->
{{age in days|day1=17|month1=9 |year1=1914|month2=10|day2=27|year2=1915}} + 1 + <!--    Andrew Fisher -->
{{age in days|day1=22|month1=10|year1=1929|month2=1 |day2=6 |year2=1932}} + 1 + <!-- 9: James Scullin -->
{{age in days|day1=7 |month1=10|year1=1941|month2=7 |day2=5 |year2=1945}} + 1 + <!-- 14: John Curtin -->
{{age in days|day1=6 |month1=7 |year1=1945|month2=7 |day2=13|year2=1945}} + 1 + <!-- 15: Frank Forde -->
{{age in days|day1=13|month1=7 |year1=1945|month2=12|day2=19|year2=1949}} + 1 + <!-- 16: Ben Chifley -->
{{age in days|day1=5 |month1=12|year1=1972|month2=11|day2=11|year2=1975}} + 1 + <!-- 21: Gough Whitlam -->
{{age in days|day1=11|month1=3 |year1=1983|month2=12|day2=20|year2=1991}} + 1 + <!-- 23: Bob Hawke -->
{{age in days|day1=20|month1=12|year1=1991|month2=3 |day2=11|year2=1996}} + 1 + <!-- 24: Paul Keating -->
{{age in days|day1=3 |month1=12|year1=2007|month2=6 |day2=24|year2=2010}} + 1 + <!-- 26: Kevin Rudd -->
{{age in days|day1=24|month1=6 |year1=2010|month2=6 |day2=27|year2=2013}} + 1 + <!-- 27: Julia Gillard -->
{{age in days|day1=27|month1=6 |year1=2013|month2=9 |day2=18|year2=2013}} + 1 + <!-- Kevin Rudd -->
{{age in days|day1=23|month1=5 |year1=2022}} <!-- 31: Anthony Albanese -->
}} days as of {{CURRENTDAY}} {{CURRENTMONTHNAME}} {{CURRENTYEAR}}
* [[Nationalist Party of Australia|Nationalist Party]] – {{#expr:{{age in days|month1=10|day1=27|year1=1915|month2=2|day2=9|year2=1923}}+1+{{age in days|month1=2|day1=9|year1=1923|month2=11|day2=22|year2=1929}}+1}} days ''(Party Deregistered)''
* [[United Australia Party]] – {{#expr:{{age in days|month1=4|day1=26|year1=1939|month2=8|day2=28|year2=1941}}+1+{{age in days|month1=1|day1=6|year1=1932|month2=4|day2=7|year2=1939}}+1}} days ''(Party Deregistered)''
* [[Protectionist Party]] – {{#expr:{{age in days|month1=9|day1=24|year1=1903|month2=4|day2=27|year2=1904}}+1+{{age in days|month1=7|day1=5|year1=1905|month2=11|day2=13|year2=1908}}+1+{{age in days|month1=1|day1=1|year1=1901|month2=9|day2=24|year2=1903}}+1}} days ''(Party Deregistered)''
* [[Commonwealth Liberal Party]] – {{#expr:{{age in days|month1=6|day1=2|year1=1909|month2=4|day2=29|year2=1910}}+1+{{age in days|month1=6|day1=24|year1=1913|month2=9|day2=17|year2=1914}}+1}} days ''(Party Deregistered)''
* [[Free Trade Party]] – {{#expr:{{age in days|month1=8|day1=18|year1=1904|month2=7|day2=5|year2=1905}}+1}} days ''(Party Deregistered)''
* [[National Party of Australia|Country Party]] – {{#expr:{{age in days|month1=8|day1=28|year1=1941|month2=10|day2=7|year2=1941}}+1+{{age in days|month1=12|day1=19|year1=1967|month2=1|day2=10|year2=1968}}+1+{{age in days|month1=4|day1=7|year1=1939|month2=4|day2=26|year2=1939}}+1}} days ''(Party Renamed) ''

{{Timeline Australian leaders|float=center}}

==House of Representatives primary, two-party and seat results==
{{Excerpt|Parliament of Australia|House of Representatives compositions}}

==Historical party composition of the Senate==
{{Excerpt|Parliament of Australia|Senate compositions}}

==See also==
{{Portal|Australia|Politics}}
* [[Censorship in Australia]]
* [[Far-right politics in Australia]]
* [[Hate speech laws in Australia]]
* [[List of sanctions involving Australia]]
* [[Politics of New South Wales]]
* [[Politics of Victoria]]
* [[Politics of Queensland]]
* [[Politics of Western Australia]]
* [[Political donations in Australia]]
* [[Political families of Australia]]
* [[Proportional Representation Society of Australia]]
* [[Referendums in Australia]]

==Notes==
{{notelist}}

==References==

=== Specific references ===
{{Reflist}}

=== General references ===

* {{Cite web |title=Parliamentary Education Office |url=https://peo.gov.au/ |publisher=Commonwealth of Australia}}
* {{Cite book |url=https://www.aph.gov.au/About_Parliament/House_of_Representatives/Powers_practice_and_procedure/Practice7 |title=House of Representatives Practice |publisher=Department of the House of Representatives |year=2018 |isbn=978-1-74366-654-8 |editor-last=Elder |editor-first=D.R. |edition=7th |location=Canberra |language=en |editor-last2=Fowler |editor-first2=P.E.}}
* {{Cite book |last=Pyke |first=John |title=Government powers under a Federal Constitution: Constitutional Law in Australia |publisher=Lawbook Co (Thomas Reuters) |year=2020 |isbn=978-0-455-24415-0 |edition=2nd |location=Pyrmont, NSW |language=en |oclc=1140000411}}

==Further reading==
{{Refbegin}}
{{Library resources box|by=no|onlinebooks=no|about=yes|wikititle=politics of Australia}}
*{{Cite book |url=https://oercollective.caul.edu.au/aust-politics-policy/ |title=Australian Politics and Policy: 2024 |date=2024-01-31 |publisher=Sydney University Press |isbn=978-1-74332-954-2 |editor-last=Perche |editor-first=Diana |doi=10.30722/sup.9781743329542 |editor-last2=Barry |editor-first2=Nicholas |editor-last3=Haigh |editor-first3=Yvonne |editor-last4=Fenna |editor-first4=Alan |editor-last5=Ghazarian |editor-first5=Zareh|display-editors=1}}
*Robert Corcoran and Jackie Dickenson (2010), ''A Dictionary of Australian Politics'', Allen and Unwin, Crows Nest, NSW
*Department of the Senate, 'Electing Australia's Senators', [https://web.archive.org/web/20070829204046/http://www.aph.gov.au/Senate/pubs/briefs/brief01.htm ''Senate Briefs'' No. 1], 2006, retrieved July 2007
*Rodney Smith (2001), ''Australian Political Culture'', Longman, Frenchs Forest NSW
{{Refend}}

{{Politics of Australia}}
{{Politics of Australia by state}}
{{Australian political parties}}
{{Australian elections}}
{{Oceania topic|Politics of}}
{{Australia topics}}
{{Authority control}}

{{DEFAULTSORT:Politics of Australia}}
[[Category:Politics of Australia| ]]