2004 United States Senate elections

The 2004 United States Senate elections were held on November 2, 2004, with all Class 3 Senate seats being contested. They coincided with the re-election of George W. Bush as president and the United States House elections, as well as many state and local elections. Senators who were elected in 1998, known as Senate Class 3, were seeking re-election or retiring in 2004.

Republicans won six seats but lost two themselves, giving them a net gain of four seats. Five of the six gains came from southern states. Democrats Fritz Hollings of South Carolina, John Breaux of Louisiana, Bob Graham of Florida, and Zell Miller of Georgia chose to retire, while John Edwards of North Carolina chose to run for the Democratic nomination for president, and was subsequently selected as the Democratic nominee for vice president. They were succeeded by Republicans Jim DeMint, David Vitter, Mel Martinez, Johnny Isakson, and Richard Burr, respectively.

In South Dakota, Republican John Thune defeated the incumbent Senate minority leader Tom Daschle, marking the first and only time since 1952 that a sitting party leader lost re-election, as well as the only time that person was the minority leader. Republican Senator Peter Fitzgerald of Illinois chose not to run for re-election, and Democrat (and future president) Barack Obama won in a landslide, becoming the Senate's only Black member and only the third popularly elected in American history and only the third elected since Reconstruction. Also, Republican Senator Ben Nighthorse Campbell of Colorado chose not to run for re-election and Democrat Ken Salazar won the open seat.

This was the third consecutive election cycle for Senate Class 3 where the Democrats either broke even or lost seats. This also marked the first time since 1980 in which a presidential candidate from either party won with coattails in the Senate. Additionally, these election results are tied with those of 1996 and 1998 as the highest number of Senate seats that the Republicans have held since 1920. Republicans would not make a net gain of seats during a presidential election year again until 2024. This is the last time both major parties were on the general election ballot in every race.

Results summary

↓

style="background:Template:Party color; width:44%;" | 44

style="background:Template:Party color; color:black; width:1%;" | 1

style="background:Template:Party color; width:55%;" | 55

style="width:44%;color:Template:Party color"| Democratic

Independent

style="width:55%;color:Template:Party color"| Republican

Summary of the 2004 United States Senate elections results

Parties		style="background-color:Template:Party color" |	style="background-color:Template:Party color" |	style="background-color:Template:Party color" |	style="background-color:Template:Party color" |	style="background-color:Template:Party color" |	Total
		Democratic	Republican	Independent	Libertarian	Others
Before these elections		48	style="background-color:Template:Republican Party (US)/meta/shading" | 51	1	—	—	100
End of this Congress (two months later)		48	style="background-color:Template:Republican Party (US)/meta/shading" | 51	1	—	—	100
Not Up		29	style="background-color:Template:Republican Party (US)/meta/shading" | 36	1	—	—	66
Up		style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 19	15	—	—	—	34
Incumbent retired	Total before	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 5	3	—	—	—	8
	Held by same party	—	style="background-color:Template:Republican Party (US)/meta/shading" | 1	—	—	—	1
	Replaced by other party	colspan="2" style="background-color:Template:Republican Party (US)/meta/shading" | Decrease 2 Republicans replaced by Increase 2 Democrats Decrease 5 Democrats replaced by Increase 5 Republicans	—	—	—	7
	Result after	2	style="background-color:Template:Republican Party (US)/meta/shading" | 6	—	—	—	8
Incumbent ran	Total before	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 14	12Template:Efn	—	—	—	26
	Won re-election	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 13	12	—	—	—	25
	Lost re-election	colspan=2 style="background-color:Template:Republican Party (US)/meta/shading" | Decrease 1 Democrat replaced by Increase 1 Republican	—	—	—	1
	Lost renomination, held by same party	—	—	—	—	—	0
	Lost renomination, and party lost	—	—	—	—	—	0
	Result after	13	13	—	—	—	26
Net gain/loss		Decrease 4	style="background-color:Template:Republican Party (US)/meta/shading" | Increase 4	—	—	—	4
Total elected		15	style="background-color:Template:Republican Party (US)/meta/shading" | 19	—	—	—	34
Result		44	style="background-color:Template:Republican Party (US)/meta/shading" | 55	1	—	—	100
Popular vote	Votes	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 44,754,618	39,920,562	186,231	754,861	2,481,075	88,097,347
	Share	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | 50.80%	45.31%	0.21%	0.86%	2.82%	100%

Sources:

• Dave Leip's Atlas of U.S. Elections
• United States Elections Project at George Mason University Template:Webarchive

Change in composition

Before the elections

style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D1	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D2	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D3	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D4	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D5	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D6	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D7	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D8	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D9	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D10
width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D20	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D19	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D18	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D17	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D16	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D15	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D14	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D13	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D12	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D11
style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D21	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D22	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D23	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D24	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D25	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D26	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D27	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D28	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D29	Template:Party shading/Democratic/active | D30 Ark. Ran
Template:Party shading/Democratic/active | D40 S.Dak. Ran	Template:Party shading/Democratic/active | D39 Ore. Ran	Template:Party shading/Democratic/active | D38 N.Dak. Ran	Template:Party shading/Democratic/active | D37 N.Y. Ran	Template:Party shading/Democratic/active | D36 Nev. Ran	Template:Party shading/Democratic/active | D35 Md. Ran	Template:Party shading/Democratic/active | D34 Ind. Ran	Template:Party shading/Democratic/active | D33 Hawaii Ran	Template:Party shading/Democratic/active | D32 Conn. Ran	Template:Party shading/Democratic/active | D31 Calif. Ran
Template:Party shading/Democratic/active | D41 Vt. Ran	Template:Party shading/Democratic/active | D42 Wash. Ran	Template:Party shading/Democratic/active | D43 Wisc. Ran	Template:Party shading/Democratic/active | D44 Fla. Retired	Template:Party shading/Democratic/active | D45 Ga. Retired	Template:Party shading/Democratic/active | D46 La. Retired	Template:Party shading/Democratic/active | D47 N.C. Retired	Template:Party shading/Democratic/active | D48 S.C. Retired	Template:Party shading/Independent | I1	rowspan=2 Template:Party shading/Republican/active | R51 Okla. Retired
Majority →
Template:Party shading/Republican/active | R41 Iowa Ran	Template:Party shading/Republican/active | R42 Kans. Ran	Template:Party shading/Republican/active | R43 Ky. Ran	Template:Party shading/Republican/active | R44 Mo. Ran	Template:Party shading/Republican/active | R45 N.H. Ran	Template:Party shading/Republican/active | R46 Ohio Ran	Template:Party shading/Republican/active | R47 Pa. Ran	Template:Party shading/Republican/active | R48 Utah Ran	Template:Party shading/Republican/active | R49 Colo. Retired	Template:Party shading/Republican/active | R50 Ill. Retired
Template:Party shading/Republican/active | R40 Idaho Ran	Template:Party shading/Republican/active | R39 Ariz. Ran	Template:Party shading/Republican/active | R38 Alaska Ran	Template:Party shading/Republican/active | R37 Ala. Ran	style="background-color:Template:Republican Party (US)/meta/shading" | R36	style="background-color:Template:Republican Party (US)/meta/shading" | R35	style="background-color:Template:Republican Party (US)/meta/shading" | R34	style="background-color:Template:Republican Party (US)/meta/shading" | R33	style="background-color:Template:Republican Party (US)/meta/shading" | R32	style="background-color:Template:Republican Party (US)/meta/shading" | R31
style="background-color:Template:Republican Party (US)/meta/shading" | R21	style="background-color:Template:Republican Party (US)/meta/shading" | R22	style="background-color:Template:Republican Party (US)/meta/shading" | R23	style="background-color:Template:Republican Party (US)/meta/shading" | R24	style="background-color:Template:Republican Party (US)/meta/shading" | R25	style="background-color:Template:Republican Party (US)/meta/shading" | R26	style="background-color:Template:Republican Party (US)/meta/shading" | R27	style="background-color:Template:Republican Party (US)/meta/shading" | R28	style="background-color:Template:Republican Party (US)/meta/shading" | R29	style="background-color:Template:Republican Party (US)/meta/shading" | R30
style="background-color:Template:Republican Party (US)/meta/shading" | R20	style="background-color:Template:Republican Party (US)/meta/shading" | R19	style="background-color:Template:Republican Party (US)/meta/shading" | R18	style="background-color:Template:Republican Party (US)/meta/shading" | R17	style="background-color:Template:Republican Party (US)/meta/shading" | R16	style="background-color:Template:Republican Party (US)/meta/shading" | R15	style="background-color:Template:Republican Party (US)/meta/shading" | R14	style="background-color:Template:Republican Party (US)/meta/shading" | R13	style="background-color:Template:Republican Party (US)/meta/shading" | R12	style="background-color:Template:Republican Party (US)/meta/shading" | R11
style="background-color:Template:Republican Party (US)/meta/shading" | R1	style="background-color:Template:Republican Party (US)/meta/shading" | R2	style="background-color:Template:Republican Party (US)/meta/shading" | R3	style="background-color:Template:Republican Party (US)/meta/shading" | R4	style="background-color:Template:Republican Party (US)/meta/shading" | R5	style="background-color:Template:Republican Party (US)/meta/shading" | R6	style="background-color:Template:Republican Party (US)/meta/shading" | R7	style="background-color:Template:Republican Party (US)/meta/shading" | R8	style="background-color:Template:Republican Party (US)/meta/shading" | R9	style="background-color:Template:Republican Party (US)/meta/shading" | R10

After the elections

style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D1	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D2	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D3	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D4	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D5	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D6	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D7	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D8	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D9	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D10
width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D20	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D19	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D18	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D17	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D16	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D15	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D14	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D13	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D12	width=10% style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D11
style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D21	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D22	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D23	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D24	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D25	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D26	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D27	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D28	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D29	Template:Party shading/Democratic/active | D30 Ark. Re-elected
Template:Party shading/Democratic/active | D40 Vt. Re-elected	Template:Party shading/Democratic/active | D39 Ore. Re-elected	Template:Party shading/Democratic/active | D38 N.Dak. Re-elected	Template:Party shading/Democratic/active | D37 N.Y. Re-elected	Template:Party shading/Democratic/active | D36 Nev. Re-elected	Template:Party shading/Democratic/active | D35 Md. Re-elected	Template:Party shading/Democratic/active | D34 Ind. Re-elected	Template:Party shading/Democratic/active | D33 Hawaii Re-elected	Template:Party shading/Democratic/active | D32 Conn. Re-elected	Template:Party shading/Democratic/active | D31 Calif. Re-elected
Template:Party shading/Democratic/active | D41 Wash. Re-elected	Template:Party shading/Democratic/active | D42 Wisc. Re-elected	Template:Party shading/Democratic/active | D43 Colo. Gain	Template:Party shading/Democratic/active | D44 Ill. Gain	Template:Party shading/Independent | I1	Template:Party shading/Republican/active | R55 S.Dak. Gain	Template:Party shading/Republican/active | R54 S.C. Gain	Template:Party shading/Republican/active | R53 N.C. Gain	Template:Party shading/Republican/active | R52 La. Gain	rowspan=2 Template:Party shading/Republican/active | R51 Ga. Gain
Majority →
Template:Party shading/Republican/active | R41 Iowa Re-elected	Template:Party shading/Republican/active | R42 Kans. Re-elected	Template:Party shading/Republican/active | R43 Ky. Re-elected	Template:Party shading/Republican/active | R44 Mo. Re-elected	Template:Party shading/Republican/active | R45 N.H. Re-elected	Template:Party shading/Republican/active | R46 Ohio Re-elected	Template:Party shading/Republican/active | R47 Okla. Hold	Template:Party shading/Republican/active | R48 Pa. Re-elected	Template:Party shading/Republican/active | R49 Utah Re-elected	Template:Party shading/Republican/active | R50 Fla. Gain
Template:Party shading/Republican/active | R40 Idaho Re-elected	Template:Party shading/Republican/active | R39 Ariz. Re-elected	Template:Party shading/Republican/active | R38 Alaska ElectedTemplate:Efn	Template:Party shading/Republican/active | R37 Ala. Re-elected	style="background-color:Template:Republican Party (US)/meta/shading" | R36	style="background-color:Template:Republican Party (US)/meta/shading" | R35	style="background-color:Template:Republican Party (US)/meta/shading" | R34	style="background-color:Template:Republican Party (US)/meta/shading" | R33	style="background-color:Template:Republican Party (US)/meta/shading" | R32	style="background-color:Template:Republican Party (US)/meta/shading" | R31
style="background-color:Template:Republican Party (US)/meta/shading" | R21	style="background-color:Template:Republican Party (US)/meta/shading" | R22	style="background-color:Template:Republican Party (US)/meta/shading" | R23	style="background-color:Template:Republican Party (US)/meta/shading" | R24	style="background-color:Template:Republican Party (US)/meta/shading" | R25	style="background-color:Template:Republican Party (US)/meta/shading" | R26	style="background-color:Template:Republican Party (US)/meta/shading" | R27	style="background-color:Template:Republican Party (US)/meta/shading" | R28	style="background-color:Template:Republican Party (US)/meta/shading" | R29	style="background-color:Template:Republican Party (US)/meta/shading" | R30
style="background-color:Template:Republican Party (US)/meta/shading" | R20	style="background-color:Template:Republican Party (US)/meta/shading" | R19	style="background-color:Template:Republican Party (US)/meta/shading" | R18	style="background-color:Template:Republican Party (US)/meta/shading" | R17	style="background-color:Template:Republican Party (US)/meta/shading" | R16	style="background-color:Template:Republican Party (US)/meta/shading" | R15	style="background-color:Template:Republican Party (US)/meta/shading" | R14	style="background-color:Template:Republican Party (US)/meta/shading" | R13	style="background-color:Template:Republican Party (US)/meta/shading" | R12	style="background-color:Template:Republican Party (US)/meta/shading" | R11
style="background-color:Template:Republican Party (US)/meta/shading" | R1	style="background-color:Template:Republican Party (US)/meta/shading" | R2	style="background-color:Template:Republican Party (US)/meta/shading" | R3	style="background-color:Template:Republican Party (US)/meta/shading" | R4	style="background-color:Template:Republican Party (US)/meta/shading" | R5	style="background-color:Template:Republican Party (US)/meta/shading" | R6	style="background-color:Template:Republican Party (US)/meta/shading" | R7	style="background-color:Template:Republican Party (US)/meta/shading" | R8	style="background-color:Template:Republican Party (US)/meta/shading" | R9	style="background-color:Template:Republican Party (US)/meta/shading" | R10

Key:	align=center width=35px style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | D# Democratic align=center width=35px Template:Party shading/Independent | I# Independent align=center width=35px style="background-color:Template:Republican Party (US)/meta/shading" | R# Republican

Gains and losses

Retirements

File:2004 United States Senate elections retirements map.svg

Map of retirements:

  Republican incumbent

  Democratic incumbent

  Democratic incumbent retired

  Republican incumbent retired

Three Republicans and five Democrats retired instead of seeking re-election.

State	Senator	Replaced by
Colorado	style="background-color:Template:Republican Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |
Florida	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |
Georgia	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |
Illinois	style="background-color:Template:Republican Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |
Louisiana	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |
North Carolina	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |
Oklahoma	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |
South Carolina	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |

Defeats

One Democrat sought re-election but lost in the general election.

State	Senator	Replaced by
South Dakota	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" |

Post-election changes

One Democrat resigned on January 17, 2006, and was replaced by a Democratic appointee.

State	Senator	Replaced by
New Jersey (Class 1)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |

Final pre-election predictions

Several sites and individuals publish predictions of competitive seats. These predictions look at factors such as the strength of the incumbent (if the incumbent is running for reelection) and the other candidates, and the state's partisan lean (reflected in part by the state's Cook Partisan Voting Index rating). The predictions assign ratings to each seat, indicating the predicted advantage that a party has in winning that seat.

Most election predictors used:

• "tossup": no advantage
• "tilt" (used by some predictors): advantage that is not quite as strong as "lean"
• "lean": slight advantage
• "likely" or "favored": significant, but surmountable, advantage
• "safe" or "solid": near-certain chance of victory

Where a site gives a percentage probability as its primary indicator of expected outcome, the chart below classifies a race as follows:

• Tossup: 50-55%
• Tilt: 56-60%
• Lean: 61-75%
• Likely: 76-93%
• Safe: 94-100%

Constituency	Incumbent		2004 election ratings
State	Senator	Last electionTemplate:Efn	Sabato's Crystal Ball Nov. 1 2004	Result
Alabama	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="63.24" | 63.24% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="67.55" | Shelby 67.55% R
Alaska	style="background-color:Template:Republican Party (US)/meta/shading" |	Template:Party shading/Vacant data-sort-value="0" | Appointed (2002)Template:Efn	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="48.58" | Murkowski 48.58% R
Arizona	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="68.74" | 68.74% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="76.74" | McCain 76.74% R
Arkansas	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-55.07" | 55.07% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-55.90" | Lincoln 55.90% D
California	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-53.06" | 53.06% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-57.71" | Boxer 57.71% D
Colorado	style="background-color:Template:Republican Party (US)/meta/shading" | (retired)	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="62.49" | 62.49% R	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-51.30" | Salazar 51.30% D (flip)
Connecticut	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-65.15" | 65.15% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-66.35" | Dodd 66.35% D
Florida	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | (retired)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-62.47" | 62.47% D	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="49.43" | Martínez 49.43% R (flip)
Georgia	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | (retired)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-58.19" | 58.19% D (2000 special)Template:Efn	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="57.88" | Isakson 57.88% R (flip)
Hawaii	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-79.18" | 79.18% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-75.51" | Inouye 75.51% D
Idaho	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="69.54" | 69.54% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="99.18" | Crapo 99.18% R
Illinois	style="background-color:Template:Republican Party (US)/meta/shading" | (retired)	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="50.35" | 50.35% R	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-69.97" | Obama 69.97% D (flip)
Indiana	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-63.72" | 63.72% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-61.65" | Bayh 61.65% D
Iowa	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="68.41" | 68.41% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="70.18" | Grassley 70.18% R
Kansas	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="65.27" | 65.27% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="69.16" | Brownback 69.16% R
Kentucky	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="49.75" | 49.75% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="50.66" | Bunning 50.66% R
Louisiana	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | (retired)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-64.02" | 64.02% D	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="51.03" | Vitter 51.03% R (flip)
Maryland	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-70.50" | 70.50% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-64.80" | Mikulski 64.80% D
Missouri	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="52.68" | 52.68% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="56.09" | Bond 56.09% R
Nevada	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-47.86" | 47.86% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-61.08" | Reid 61.08% D
New Hampshire	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="67.84" | 67.84% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="66.24" | Gregg 66.24% R
New York	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-54.62" | 54.62% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-71.16" | Schumer 71.16% D
North Carolina	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | (retired)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-51.15" | 51.15% D	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="51.60" | Burr 51.60% R (flip)
North Dakota	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-63.16" | 63.16% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-68.28" | Dorgan 68.28% D
Ohio	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="56.46" | 56.46% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="63.85" | Voinovich 63.85% R
Oklahoma	style="background-color:Template:Republican Party (US)/meta/shading" | (retired)	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="66.38" | 66.38% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="52.77" | Coburn 52.77% R
Oregon	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-61.05" | 61.05% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-63.39" | Wyden 63.39% D
Pennsylvania	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="61.34" | 61.34% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="52.62" | Specter 52.62% R
South Carolina	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | (retired)	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-52.70" | 52.70% D	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="53.67" | DeMint 53.67% R (flip)
South Dakota	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-62.14" | 62.14% D	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="50.58" | Thune 50.58% R (flip)
Utah	style="background-color:Template:Republican Party (US)/meta/shading" |	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="63.98" | 63.98% R	Template:USRaceRating	style="background-color:Template:Republican Party (US)/meta/shading" data-sort-value="68.73" | Bennett 68.73% R
Vermont	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-72.22" | 72.22% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-70.63" | Leahy 70.63% D
Washington	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-58.41" | 58.41% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-54.98" | Murray 54.98% D
Wisconsin	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" |	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-50.55" | 50.55% D	Template:USRaceRating	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" data-sort-value="-55.35" | Feingold 55.35% D

Race summary

Special elections during the 108th Congress

There were no special elections during the 108th Congress.

Elections leading to the next Congress

In these general elections, the winners were elected for the term beginning January 3, 2005; ordered by state.

All of the elections involved the Class 3 seats.

State	Incumbent			Results	Candidates
	Senator	Party	Electoral history
Alabama		Template:Party shading/Republican/Text	1986Template:Efn 1992 1998	Incumbent re-elected.	Template:Plainlist
Alaska		Template:Party shading/Republican/Text	2002 (appointed)	Interim appointee elected.	Template:Plainlist
Arizona		Template:Party shading/Republican/Text	1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Arkansas		Template:Party shading/Democratic/Text	1998	Incumbent re-elected.	Template:Plainlist
California		Template:Party shading/Democratic/Text	1992 1998	Incumbent re-elected.	Template:Plainlist
Colorado		Template:Party shading/Republican/Text	1992Template:Efn 1998	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | Incumbent retired. Democratic gain.	Template:Plainlist
Connecticut		Template:Party shading/Democratic/Text	1980 1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Florida		Template:Party shading/Democratic/Text	1986 1992 1998	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent retired. Republican gain.	Template:Plainlist
Georgia		Template:Party shading/Democratic/Text	2000 (appointed) 2000 (special)	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent retired. Republican gain.	Template:Plainlist
Hawaii		Template:Party shading/Democratic/Text	1962 1968 1974 1980 1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Idaho		Template:Party shading/Republican/Text	1998	Incumbent re-elected.	Template:Plainlist
Illinois		Template:Party shading/Republican/Text	1998	style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | Incumbent retired. Democratic gain.	Template:Plainlist
Indiana		Template:Party shading/Democratic/Text	1998	Incumbent re-elected.	Template:Plainlist
Iowa		Template:Party shading/Republican/Text	1980 1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Kansas		Template:Party shading/Republican/Text	1996 (special) 1998	Incumbent re-elected.	Template:Plainlist
Kentucky		Template:Party shading/Republican/Text	1998	Incumbent re-elected.	Template:Plainlist
Louisiana		Template:Party shading/Democratic/Text	1986 1992 1998	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent retired. Republican gain.	Template:Plainlist
Maryland		Template:Party shading/Democratic/Text	1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Missouri		Template:Party shading/Republican/Text	1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Nevada		Template:Party shading/Democratic/Text	1986 1992 1998	Incumbent re-elected.	Template:Plainlist
New Hampshire		Template:Party shading/Republican/Text	1992 1998	Incumbent re-elected.	Template:Plainlist
New York		Template:Party shading/Democratic/Text	1998	Incumbent re-elected.	Template:Plainlist
North Carolina		Template:Party shading/Democratic/Text	1998	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent retired to run for Vice President. Republican gain.	Template:Plainlist
North Dakota		Template:Party shading/North Dakota Democratic-NPL | Democratic-NPL	1992 1998	Incumbent re-elected.	Template:Plainlist
Ohio		Template:Party shading/Republican/Text	1998	Incumbent re-elected.	Template:Plainlist
Oklahoma		Template:Party shading/Republican/Text	1980 1986 1992 1998	Template:Party shading/Republican/Hold | Incumbent retired. Republican hold.	Template:Plainlist
Oregon		Template:Party shading/Democratic/Text	1996 (special) 1998	Incumbent re-elected.	Template:Plainlist
Pennsylvania		style="background-color:Template:Republican Party (US)/meta/shading" | Republican	1980 1986 1992 1998	Incumbent re-elected.	Template:Plainlist
South Carolina		Template:Party shading/Democratic/Text	1966 (special) 1968 1974 1980 1986 1992 1998	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent retired. Republican gain.	Template:Plainlist
South Dakota		Template:Party shading/Democratic/Text	1986 1992 1998	style="background-color:Template:Republican Party (US)/meta/shading" | Incumbent lost re-election. Republican gain.	Template:Plainlist
Utah		Template:Party shading/Republican/Text	1992 1998	Incumbent re-elected.	Template:Plainlist
Vermont		Template:Party shading/Democratic/Text	1974 1980 1986 1992 1998	Incumbent re-elected.	Template:Plainlist
Washington		Template:Party shading/Democratic/Text	1992 1998	Incumbent re-elected.	Template:Plainlist
Wisconsin		Template:Party shading/Democratic/Text	1992 1998	Incumbent re-elected.	Template:Plainlist

Closest races

In seven races the margin of victory was under 10%.

District	Winner	Margin
Florida	data-sort-value=-1 style="background-color:Template:Republican Party (US)/meta/shading" | Republican (flip)	1.1%
South Dakota	data-sort-value=-1 style="background-color:Template:Republican Party (US)/meta/shading" | Republican (flip)	1.2%
Kentucky	data-sort-value=-0.5 style="background-color:Template:Republican Party (US)/meta/shading" | Republican	1.4%
Alaska	data-sort-value=-0.5 style="background-color:Template:Republican Party (US)/meta/shading" | Republican	3.0%
Colorado	data-sort-value=1.0 style="color:black;background-color:Template:Democratic Party (US)/meta/shading" | Democratic (flip)	3.9%
North Carolina	data-sort-value=-1.0 style="background-color:Template:Republican Party (US)/meta/shading" | Republican (flip)	4.6%
South Carolina	data-sort-value=-1.0 style="background-color:Template:Republican Party (US)/meta/shading" | Republican (flip)	9.6%Template:Efn

Alabama

Incumbent Republican Richard Shelby won re-election to a fourth term over Democratic perennial candidate Wayne Sowell.

Shelby, who switched parties ten years prior, had over $11 million cash on hand. Shelby was chairman of the Banking Committee. Wayne Sowell became the first black U.S. Senate nominee of a major party in Alabama.

Alabama general election

Party		Candidate	Votes	%
		Richard Shelby (incumbent)		67.6
		Wayne Sowell		32.4
	Independent	Write Ins		0.1
Total votes				100.0
Turnout				N/A

Alaska

Incumbent Republican Lisa Murkowski of Anchorage, sought election to her first full term after being appointed to serve out the rest of her father's unexpired term when he resigned in December 2002 to become Governor of Alaska. Her main challenger was Democratic former Governor Tony Knowles, her father's predecessor as governor. Murkowski won by a slight margin.

Although Alaska is heavily Republican, popular opinion had swung against the Murkowski family because of a tax increase passed by Governor Frank Murkowski, Lisa Murkowski's father. In addition, multiple voters disapproved of apparent nepotism in the appointment of Lisa Murkowski to the Senate. Knowles, who as mentioned above preceded Frank Murkowski as governor, had enlisted extensive out-of-state support for his bid to take over Lisa Murkowski's Senate seat. However, veteran Republican Senator Ted Stevens taped advertisements warning Alaskans that electing a Democrat could result in less federal dollars for Alaska.

Democratic primary

Party		Candidate	Votes	%
		Tony Knowles		95.0
		Don Wright		2.5
		Theresa Obermeyer		2.4
Total votes				100.0

Republican primary

Party		Candidate	Votes	%
		Lisa Murkowski (Incumbent)		58.1
		Mike Miller		37.3
		Wev Shea		3.6
		Jim Dore		0.9
Total votes				100.0

Lisa Murkowski had low approval ratings as senator due to her father, Frank Murkowski, who at the time was the Governor of Alaska with extremely low approval ratings himself. Former Governor Tony Knowles ran against Murkowski. He ran as a Democrat who supported drilling in ANWR, in contrast to most Democrats. Ted Stevens tried to "rescue" her campaign and help her maintain her seat.

Template:Election box winning candidate with party link

Alaska general election

Party		Candidate	Votes	%	±%
		Tony Knowles	140,424	45.55
	Independent	Marc J. Millican	8,885	2.88
		Jerry Sanders	3,785	1.23
		Jim Sykes	3,053	0.99
		Scott A. Kohlhaas	1,240	0.40
	Independent	Ted Gianoutsas	732	0.24
	Write-ins		423	0.14
Majority			9,349	3.03
Turnout			308,315

Arizona

Incumbent Republican John McCain won re-election to a fourth term with his largest victory over Democratic teacher Stuart Starky.

Since 1998, McCain challenged Texas Governor George W. Bush in the presidential primary and despite winning the New Hampshire primary, he lost the nomination. Solidifying his image as a maverick, he voted against the Bush tax cuts. He supported limits on stem cell research. He had a lopsided favorable ratings of 39% to 9% unfavorable in the most recent The New York Times/CBS News poll.

Stuart Starky, an eighth-grade teacher in South Phoenix, was widely known as a long-shot challenger. Starky stated that "I truly believe he's going to run for president again." Starky was called by The Arizona Republic a "sacrificial lamb" put on ballot because there were no chances to beat McCain. During his campaign, he debated McCain twice, once in Tucson and once in Flagstaff. He was also featured on the cover of Teacher Magazine, dubbed the "Unsinkable Stu Starky." Starky was defeated in a landslide. But, despite the relatively low percentage, he gained the highest vote per dollar amount in the country, spending only about $15,000 for his campaign (Starky's campaign may have been aided by John Kerry running for president).

Template:Election box winning candidate with party link

Arizona general election

Party		Candidate	Votes	%	±%
		Stuart Starky	404,507	20.62
		Ernest Hancock	51,798	2.64
Majority			1,100,865	56.12
Turnout			1,961,677

Arkansas

Incumbent Democrat Blanche Lincoln ran for re-election. Lincoln won re-election over Republican State Senator Jim Holt while President George W. Bush carried the state with almost the same margin of victory.

The Democratic Party held super-majority status in the Arkansas General Assembly. A majority of local and statewide offices were also held by Democrats. This was rare even for the time in the South, where a majority of statewide offices were and still are held by Republicans. Arkansas had the distinction in 1992 of being the only state in the country to give the majority of its vote to a single candidate in the presidential election—native son Bill Clinton—while every other state's electoral votes were won by pluralities of the vote among the three candidates. Arkansas had since become more reliably Republican in presidential elections. The state voted for George W. Bush over John Kerry in 2004. Lincoln won by 2% less than she had in 1998.

Democrats at the time had an overwhelming majority of registered voters, and the Democratic Party of Arkansas was more conservative than the national entity. Two of Arkansas' three Democratic Representatives at the time were members of the Blue Dog Coalition, which tends to be more pro-business, pro-military spending, and socially conservative than the Democratic mainstream.

Republican primary

Party		Candidate	Votes	%
		Jim Holt		68.9
		Andy Lee		19.8
		Rosemarie Clampitt		11.3
Total votes				100.0

Lincoln was a popular incumbent. In March, she had an approval rating of 55%. Lincoln calls herself an advocate for rural America, having grown up on a farm herself. Holt is from Northwest Arkansas, who also lives on a farm. Holt was widely perceived as a long shot. By the end of June, he only raised $29,000, while Lincoln had over $5 million cash on hand. Lincoln won re-election by over 11%.

Template:Election box majority no change

Arkansas Senate election 2004

Party		Candidate	Votes	%
		Blanche Lincoln (Incumbent)		55.90
		Jim Holt		44.07
	Independent	Write Ins		0.0
Turnout			1,039,349

California

Incumbent Democrat Barbara Boxer defeated Republican former Secretary of State Bill Jones. Boxer's 6.96 million votes set the record for the most votes cast for one candidate in one state in one election, until it was surpassed by Senator Dianne Feinstein's 7.75 million votes in 2012.

Democratic Primary Election

Candidate		Votes	%
Barbara Boxer (Incumbent)		Template:Replace	100.00

Republican Primary Election

Candidate		Votes	%
Bill Jones		Template:Replace	44.81
Rosario Marin		Template:Replace	20.03
Howard Kaloogian		Template:Replace	11.17
Toni Casey		Template:Replace	6.27
Tim Stoen		Template:Replace	5.51
James Stewart		Template:Replace	3.45
Barry L. Hatch		Template:Replace	3.14
John M. Van Zandt		Template:Replace	2.51
Danney Ball		Template:Replace	1.66
Bill Quraishi		Template:Replace	1.43
Total votes		Template:Replace	100.00

American Independent primary

Candidate		Votes	%
Don J. Grundmann		Template:Replace	100.00

Libertarian primary

Candidate		Votes	%
Jim Gray		Template:Replace	57.30
Gail Lightfoot		Template:Replace	42.70
Total votes		Template:Replace	100.00

Peace and Freedom primary

Candidate		Votes	%
Marsha Feinland		Template:Replace	100.00

Boxer originally had decided to retire in 2004 but changed her mind to "fight for the right to dissent" against conservatives like Majority Leader Tom DeLay. Jones was widely considered as the underdog. Jones got a major endorsement from the popular Governor Arnold Schwarzenegger. The two major candidates had a debate. Pre-election polling had Boxer leading in double digits. But he never released a single TV ad. Boxer portrayed Jones as too conservative for California, citing his votes in the California Assembly (1982 to 1994) against gun control, increased minimum wage, support for offshore drilling, and a loosening of environmental regulations.

Jones raised about $700,000 more than Boxer during the third quarter, pulling in $2.5 million to Boxer's $1.8 million. But overall, Boxer has raised $16 million to Jones' $6.2 million. And Boxer has spent about $7 million on radio and television ads alone.

The election was not close, with Boxer winning by an authoritative 20 point margin. Jones only performed well in rural parts of the state. Boxer on the other hand won almost all major metropolitan areas in the state. The race was called right when the polls closed at 11:00 P.M. EST, and 7:00 P.M. PTZ. Jones conceded defeat to Boxer at 11:12 P.M. EST, and 7:12 PTZ.

California general election

Party		Candidate	Votes	%
		Barbara Boxer (Incumbent)		57.71
		Bill Jones		37.80
		Marsha Feinland		2.02
		James P. "Jim" Gray		1.80
		Don J. Grundmann		0.67
	No party	Dennis Richter (write-in)	43	0.00
	No party	Howard Johnson (write-in)	8	0.00
	No party	John Emery Jones (write-in)	2	0.00
Invalid or blank votes			536,388	4.26
Total votes				100.00
Turnout				57.03

Colorado

Incumbent Republican Ben Nighthorse Campbell decided to retire instead of seeking a third term. The Democratic Attorney General of Colorado Ken Salazar won the open seat.

Before Campbell's retirement, no prominent Democrat had entered the race, with educator Mike Miles and businessman Rutt Bridges pursuing the Democratic nomination. After Campbell's retirement, some expected popular Republican Governor Bill Owens to enter the race, however he declined to run. Campbell's retirement and Owens' decision not to run prompted a number of prominent Democrats to reexamine the race.

On March 10, the same day Owens announced he would not run, U.S. Congressman Mark Udall entered the race. The next day, state Attorney General Ken Salazar entered the race, leading Udall to immediately withdraw and endorse him. Salazar lost to Mike Miles at the State nominating convention. In spite of this loss, the national Democratic Party backed Salazar with contributions from the DSCC and promotion of Salazar as the only primary candidate.

Democratic primary

Party		Candidate	Votes	%
		Ken Salazar		73.02
		Mike Miles		26.98
Total votes				100.00

The two candidates got into an ideological battle, as U.S. Representative Bob Schaffer attacked Pete Coors, former CEO and chairman of Coors Brewing Company, because his company had provided benefits to the partners of its gay and lesbian employees, in addition to promoting its beer in gay bars. Coors defended himself by saying that he was opposed to same-sex marriage, and supported a constitutional amendment to ban it, although he noted that he supported civil unions for gay couples. According to the Rocky Mountain News, Coors described his company's pro-LGBT practices as "good business, separate from politics." Coors defeated Schaffer with 61% of the vote in the primary, with a number of analysts citing his high name recognition in the state as a primary factor.

Republican primary

Party		Candidate	Votes	%
		Pete Coors		60.57
		Bob Schaffer		39.43
Total votes				100.00

Pete Coors ran as a moderate conservative. However, Salazar was also a moderate and a highly popular State Attorney General. Coors is also a great-grandson of Adolph Coors, founder of the brewing company. His father is Joseph Coors, president of the company and founding member of The Heritage Foundation, a conservative think tank. Salazar narrowly won the open seat. It was one of only two Democratic pickups in the 2004 Senate elections; Illinois was the other.

According to the non-partisan OpenSecrets, Coors gave his own campaign $1,213,657 and received individual donations of $60,550 from other Coors family members.

A state record of over $11 million was raised during the election.

Template:Election box winning candidate with party link

Colorado general election

Party		Candidate	Votes	%	±%
		Pete Coors	980,668	46.53
		Douglas Campbell	18,783	0.89
		Richard Randall	10,160	0.48
	Independent	John R. Harris	8,442	0.40
		Victor Good	6,481	0.31
	Independent	Finn Gotaas	1,750	0.08
Majority			100,520	4.77
Turnout			2,107,472

Connecticut

Incumbent Democrat Chris Dodd won re-election for a fifth term, beating Republican Jack Orchulli, CEO and co-founder of a Michael Kors's apparel company.

Chris Dodd was one of the most powerful senators in congress. In the election cycle, Dodd raised over $7 million. His top five contributors were Bear Stearns, Citigroup, National Westminster Bank, Lehman Brothers, and Goldman Sachs.

Republican nominee, Jack Orchulli, ran as fiscal conservative and social moderate. He broke ranks with his party on gay marriage and abortion. That put him on the same side as most voters in the blue state of Connecticut. He often talked about a "broken education system." He argued that Dodd has not done anything in his 30 years in congress to fix such issues as traffic problems in Fairfield County.

Orchulli launched a statewide TV ad campaign in September, as he spent over $1.1 million and pledged to spend "whatever it takes" if polls show he is gaining ground on Dodd.

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Connecticut General election

Party		Candidate	Votes	%
		Chris Dodd (Incumbent)		66.35
		Jack Orchulli		32.13
		Timothy Knibbs		0.87
		Leonard Rasch		0.64
Turnout			1,424,726

Florida

Incumbent Democrat Bob Graham retired after three terms. The primary elections were held on August 31, 2004. Republican Mel Martínez won the open seat, beating Democrat Betty Castor, former president of the University of South Florida, former Education Commissioner of Florida, and former state senator. Martínez, a former U.S. Secretary of Housing and Urban Development, was supported by the Bush administration.

Democratic primary

Party		Candidate	Votes	%
		Betty Castor		58.1
		Peter Deutsch		27.9
		Alex Penelas		10.1
		Bernard E. Klein		3.9
Total votes				100.0%

Republican primary

Party		Candidate	Votes	%
		Mel Martínez		44.9
		Bill McCollum		30.9
		Doug Gallagher		13.6
		Johnnie Byrd		5.9
		Karen Saull		1.8
		Sonya March		1.5
		Larry Klayman		1.1
		William Billy Kogut		0.3
Total votes				100.0%

In the spring, the campaign hired fundraising staff from the defunct presidential campaigns of Howard Dean and Bob Graham, and subsequently posted much higher fundraising numbers over the summer. Online grassroots techniques devised for the Dean campaign (Castor became a Dean Dozen candidate in August) were one contributing factor: another was the support of EMILY's List, which named Castor as its highest-rated candidate for the 2004 election cycle, even when her support for banning intact dilation and extraction (D&X) abortions was not in line with the EMILY's List support for woman's issues. The latter was a source of criticism during the August primary heat - a complaint was filed by a Deutsch supporter with the Federal Election Commission accusing inappropriate coordination with EMILY's List. The complaint was dismissed by the Federal Election Commission in 2005.

Castor's handling of Sami Al-Arian became another source of criticism during the campaign. In June, The American Democracy Project, a 527 group founded by Bernie Friedman, began attacking Castor's handling of the incident, alleging that she had sufficient evidence to fire Al-Arian in the mid-1990s. Castor responded by stating that she never had sufficient evidence to fire Al-Arian, who was a tenured professor at the time. On June 29, Senator Graham, who had previously remained outside of the Al-Arian controversy, released a statement that "Betty Castor acted appropriately as President of the University of South Florida to deal with Sami Al-Arian": later, Graham and Senator Bill Nelson brokered an agreement between the Democratic candidates to refrain from negative campaigning against each other, although this agreement appeared to break down in the final weeks of the race, when Deutsch launched attack ads on television.

Despite these controversies, Castor won the Democratic nomination on August 31. She was defeated, however, by Republican candidate Mel Martínez in a close race on November 2, 2004. The overwhelming support for Martínez among Latinos effectively counterbalanced Castor's relatively high popularity among swing voters throughout the state.

There was some speculation that Castor would run for Governor of Florida in 2006 to replace Jeb Bush, who was ineligible for re-election due to term limits, but she announced in 2005 that she would not be a candidate.

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2004 United States Senate election in Florida

Party		Candidate	Votes	%	±%
		Elizabeth Castor	3,590,201	48.32
		Dennis F. Bradley	166,642	2.24
	Write-ins		187	0.00
Majority			82,663	1.11
Turnout			7,429,894	70.92
Total votes			7,429,894	100.00	+3,529,732

Georgia

Incumbent Democrat Zell Miller retired. Democratic U.S. Representative Denise Majette became both the first African American and the first woman to be nominated for the U.S. Senate in Georgia. Republican U.S. Representative Johnny Isakson won the open seat.

The results were almost a complete reversal from the previous election in 2000.

Majette's announcement that she would seek to replace Miller also caught Democrats by surprise, as she was not on anyone's call list when Democrats began seeking a candidate to replace Miller. Further skepticism among Democrats about the viability of her candidacy surfaced when she announced that "God" had told her to run for the Senate. She received important endorsements from U.S. Senators Mary Landrieu of Louisiana and Debbie Stabenow of Michigan, along with others in Washington who campaigned and raised money for Majette. Her Senate campaign slogan was "I'll be nobody's Senator, but yours."

A number of factors led to Majette's loss. These include her late start, her valuable time and money spent in the runoff, larger conservative turnout from a proposed constitutional amendment banning same-sex marriages (which Majette opposed), the popularity of President George W. Bush in Georgia, and her lack of experience (being a one-term congresswoman).

Republican primary

Party		Candidate	Votes	%
		Johnny Isakson		53.2%
		Herman Cain		26.2%
		Mac Collins		20.6%

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Georgia general election

Party		Candidate	Votes	%	±%
		Denise Majette	1,287,695	39.98
		Allen Buckley	69,051	2.14
Majority			576,510	17.90
Turnout			3,220,951

Hawaii

Incumbent Democrat U.S. Senator Daniel Inouye won re-election to an eighth term over Republican, Campbell Cavasso, a former state representative.

Inouye won every single county with at least 70% of the vote. His best performance was in Kauai County, where he won with an estimated 80%; also was Cavasso's weakest performance, getting just 16.5% of the vote there.

Hawaii General election

Party		Candidate	Votes	%
		Daniel Inouye (incumbent)		75.5
		Campbell Cavasso		21.0
	Independent	Jim Brewer		2.2
		Lloyd Jeffrey Mallan		1.3
Total votes				100.00

Idaho

Incumbent Republican Mike Crapo won a second term in a landslide after no one filed for the Democratic nomination. Democrat Scott McClure conducted a write-in campaign but only received 4,136 votes, or about 1% of those cast.

Republican primary

Party		Candidate	Votes	%
		Mike Crapo (Incumbent)		100.00
Total votes				100.00%

Crapo won every county with over 95% of the vote. His weakest performance by far was in Latah County, where he got 95.6% of the vote to McClure's 4.4%.

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2004 United States Senate election in Idaho

Party		Candidate	Votes	%	±%
		Scott F. McClure (write-in)	4,136	0.82
Majority			495,660	98.36
Turnout			503,932

Illinois

Incumbent Republican Peter Fitzgerald decided to retire after one term. The Democratic and Republican primary elections were held in March, which included a total of 15 candidates who combined to spend a record total of over $60 million seeking the open seat.

State Senator and future President Barack Obama won the Democratic primary and Jack Ryan won the Republican primary. Ryan later withdrew from the race four days after the Chicago Tribune persuaded a California court to release child custody records. The Illinois Republican State Central Committee chose former Diplomat Alan Keyes to replace Ryan as the Republican candidate.

The election was the first for the U.S. Senate in which both major party candidates were African American. Obama's 43% margin of victory was the largest in the state history of U.S. Senate elections. The inequality in the candidates spending for the fall elections – $14,244,768 by Obama and $2,545,325 by Keyes – is also among the largest in history in both absolute and relative terms.

File:20040814 Bud Billiken Obama float.JPG

Obama-for-Senate float at the 2004 Bud Billiken Parade and Picnic

Fitzgerald's predecessor, Democrat Carol Moseley Braun, declined to run. Barack Obama, a member of the Illinois Senate since 1997 and an unsuccessful 2000 Democratic primary challenger to four-term incumbent U.S. Rep. Bobby Rush for Rush's U.S House seat, launched a campaign committee at the beginning of July 2002 to run for the U.S. Senate, 21 months before the March 2004 primary, and two months later had David Axelrod lined up to do his campaign media. Obama formally announced his candidacy on January 21, 2003, four days after former U.S. Sen. Carol Moseley Braun announced she would not seek a rematch with U.S. Sen. Peter Fitzgerald.

On April 15, 2003, with six Democrats already running and three Republicans threatening to run against him, incumbent Fitzgerald announced he would not seek a second term in 2004, and three weeks later popular Republican former Governor Jim Edgar declined to run, leading to wide open Democratic and Republican primary races with 15 candidates, including 7 millionaires (triggering the first application of the Millionaires' Amendment of the 2002 McCain–Feingold Act), in the most expensive Senate primary in U.S. history.

Obama touted his legislative experience and early public opposition to the Iraq War to distinguish himself from his Democratic primary rivals. Illinois Comptroller Dan Hynes won the endorsement of the AFL–CIO. Obama succeeded in obtaining the support of three of the state's largest and most active member unions: AFSCME, SEIU, and the Illinois Federation of Teachers. Hynes and multimillionaire former securities trader Blair Hull each won the endorsements of two of the nine Democratic Illinois members of the US House of Representatives. Obama had the endorsements of four: Jesse Jackson, Jr., Danny Davis, Lane Evans, and Jan Schakowsky.

Obama surged into the lead after he finally began television advertising in Chicago in the final three weeks of the campaign, which was expanded to downstate Illinois during the last six days of the campaign. The ads included strong endorsements by the five largest newspapers in Illinois—the Chicago Tribune, Chicago Sun-Times, Daily Herald, The Rockford Register Star, and Peoria Journal Star—and a testimonial by Sheila Simon that Obama was "cut from that same cloth" as her father, the late former U.S. Senator Paul Simon, who had planned to endorse and campaign for Obama before his unexpected death in December 2003.

On March 16, 2004, Obama won the Democratic primary by an unexpected landslide—receiving 53% of the vote, 29% ahead of his nearest Democratic rival, with a vote total that nearly equaled that of all eight Republican candidates combined—which overnight made him a rising star in the national Democratic Party, started speculation about a presidential future, and led to the reissue of his memoir, Dreams from My Father. The Democratic primary election, including seven candidates who combined to spend over $46 million, was the most expensive U.S. Senate primary election in history.

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Democratic Primary, United States Senate, March 16, 2004

Party		Candidate	Votes	%	±%
		Daniel W. Hynes	294,717	23.7
		Blair Hull	134,453	10.8
		Maria Pappas	74,987	6.0
		Gery Chico	53,433	4.3
		Nancy Skinner	16,098	1.3
		Joyce Washington	13,375	1.1
		Estella Johnson-Hunt (write-in)	10	0.0
Majority			361,206	29.4
Turnout			1,242,996

GOP frontrunner Jack Ryan had divorced actress Jeri Ryan in 1999, and the records of the divorce were sealed at their mutual request. Five years later, when Ryan's Senate campaign began, the Chicago Tribune newspaper and WLS-TV, the local ABC affiliate, sought to have the records released. On March 3, 2004, several of Ryan's GOP primary opponents urged Ryan to release the records. Both Ryan and his wife agreed to make their divorce records public, but not make the child custody records public, claiming that the custody records could be harmful to their son if released. Ryan went on to win the GOP primary on March 16, 2004, defeating his nearest competitor, Jim Oberweis, by twelve percentage points.

Ryan was a proponent of across-the-board tax cuts and tort reform, an effort to limit payout in medical malpractice lawsuits. He was also a proponent of school choice and supported vouchers for private school students.

Oberweis's 2004 campaign was notable for a television commercial where he flew in a helicopter over Chicago's Soldier Field, and claimed enough illegal immigrants came into America in a week (10,000 a day) to fill the stadium's 61,500 seats. Oberweis was also fined $21,000 by the Federal Election Commission for a commercial for his dairy that ran during his 2004 Senate campaign. The FEC ruled that the commercial wrongly benefited his campaign and constituted a corporate contribution, thus violating campaign law.

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Republican Primary, March 16, 2004

Party		Candidate	Votes	%	±%
		Jim Oberweis	155,794	23.5
		Steven J. Rauschenberger	132,655	20.0
		Andrew McKenna	97,238	14.7
		Jonathan C. Wright	17,189	2.6
		John Borling	13,390	2.0
		Norm Hill	5,637	0.9
		Chirinjeev Kathuria	5,110	0.8
Majority			78,997	11.9
Turnout			661,804

As a result of the GOP and Democratic primaries, Democrat Barack Obama was pitted against Republican Jack Ryan.

Ryan trailed Obama in early polls, after the media reported that Ryan had assigned Justin Warfel, a Ryan campaign worker, to track Obama's appearances. The tactic backfired when multiple people, including Ryan's supporters, criticized this activity. Ryan's spokesman apologized, and promised that Warfel would give Obama more space. Obama acknowledged that it is standard practice to film an opponent in public, and Obama said he was satisfied with Ryan's decision to have Warfel back off.

As the campaign progressed, the lawsuit brought by the Chicago Tribune to open child custody files from Ryan's divorce was still continuing. Barack Obama's backers emailed reporters about the divorce controversy, but refrained from on-the-record commentary. On March 29, 2004, Los Angeles Superior Court Judge Robert Schnider ruled that several of the Ryans' divorce records should be opened to the public, and ruled that a court-appointed referee would later decide which custody files should remain sealed to protect the interests of Ryan's young child. A few days later, on April 2, 2004, Barack Obama changed his position about the Ryans' soon-to-be-released divorce records, and called on Democrats to not inject them into the campaign.

On June 22, 2004, after receiving the report from the court appointed referee, the judge released the files that were deemed consistent with the interests of Ryan's young child. In those files, Jeri Ryan alleged that Jack Ryan had taken her to sex clubs in several cities, intending for them to have sex in public.

The decision to release the files generated much controversy because it went against both parents' direct request, and because it reversed the earlier decision to seal the papers in the best interest of the child. Jim Oberweis, Ryan's defeated GOP opponent, commented that "these are allegations made in a divorce hearing, and we all know people tend to say things that aren't necessarily true in divorce proceedings when there is money involved and custody of children involved."

Although their sensational nature made the revelations fodder for tabloid and television programs specializing in such stories, the files were also newsworthy because of questions about whether Ryan had accurately described the documents to GOP party leaders. Prior to release of the documents, Ryan had told leading Republicans that five percent of the divorce file could cause problems for his campaign. But after the documents were released, GOP officials including state GOP Chair Judy Baar Topinka said they felt Ryan had misleadingly indicated the divorce records would not be embarrassing.

That charge of dishonesty led to intensifying calls for Ryan's withdrawal, though Topinka, who was considering running herself, said after the June 25 withdrawal that Ryan's "decision was a personal one" and that the state GOP had not pressured Ryan to drop out. Ryan's campaign ended less than a week after the custody records were opened, and Ryan officially filed the documentation to withdraw on July 29, 2004. Obama was left without an opponent.

The Illinois Republican State Central Committee chose former diplomat Alan Keyes to replace Ryan as the Republican candidate. Keyes, a conservative Republican from Maryland, faced difficulties. First, Keyes had few ties to Illinois political leaders. Second, the lack of an opponent allowed Obama to campaign throughout the more conservative downstate regions to build up name recognition. Third, Keyes was seen as a carpetbagger, only establishing legal residency in Calumet City, Illinois days before running.

The Chicago Tribune in an editorial, stated that "Mr. Keyes may have noticed a large body of water as he flew into O'Hare. That is called Lake Michigan." In 2000, Keyes attacked Hillary Clinton for running for US Senator from New York even though she had never lived there, calling her a carpetbagger. Keyes attacked Barack Obama for voting against a bill that would have outlawed a form of late-term abortion.

Obama ran the most successful Senate campaign in 2004, and was so far ahead in polls that he soon began to campaign outside of Illinois in support of other Democratic candidates. He gave large sums of campaign funds to other candidates and the Democratic Senatorial Campaign Committee and sent a number of his volunteers to work on other races, including that of eventual three-term Congresswoman Melissa Bean who defeated then-Congressman Phil Crane in that year's election. Obama and Keyes differed on a number of issues including school vouchers and tax cuts, both of which Keyes supported and Obama opposed.

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Illinois general election

Party		Candidate	Votes	%	±%
		Alan Keyes	1,390,690	27.0
	Independent	Al Franzen	81,164	1.6
		Jerry Kohn	69,253	1.3
	Write-ins		2,957	0.1
Majority			2,206,766	43.0
Turnout			5,350,493	71.3

The Obama-Keyes race was one of the first to be called on Election Day, November 2, 2004.

At the start of Keyes's candidacy in August, Keyes had 24% support in the polls. He received 27% of the vote in the November general election to Obama's 70%.

Following the election, Keyes refused to call Obama to congratulate him. Media reports claimed that Keyes also failed to concede the race to Obama. Two days after the election, a radio interviewer asked Keyes whether he had conceded the race. Keyes replied, "Of course I've conceded the race. I mean, I gave my speech to that effect."

On the radio program, Keyes explained that his refusal to congratulate Obama was "not anything personal," but was meant to make a statement against "extend[ing] false congratulations to the triumph of what we have declared to be across the line." He said that Obama's position on moral issues regarding life and the family had crossed that line. "I'm supposed to make a call that represents the congratulations toward the triumph of that which I believe ultimately stands for ... a culture evil enough to destroy the very soul and heart of my country? I can't do this. And I will not make a false gesture," Keyes said.

Indiana

Incumbent Democrat Evan Bayh won re-election to a second term, beating Republican Marvin Scott, a professor at Butler University.

In September, Bayh had $6.5 million cash on hand. Scott's strategy of trying to paint Bayh as too liberal failed to gain traction. Bayh was viewed early in 2004 as a serious vice presidential candidate for John Kerry. Bayh was on the final shortlist for a Kerry running mate, but North Carolina Senator John Edwards was chosen as Kerry's running mate.

Bayh won 86 of Indiana's counties compared to 6 for Scott.

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Indiana general election

Party		Candidate	Votes	%	±%
		Marvin Scott	903,913	37.2
		Albert Barger	27,344	1.1
Majority			593,063
Turnout			2,428,233	58.0

Iowa

Incumbent Republican Chuck Grassley won a fifth term, beating former Democratic Iowa State Senator Arthur A. Small. Though this election coincided with the highly competitive presidential election in Iowa, Grassley was in little danger of losing his seat and defeated Small handily.

Democratic primary

Party		Candidate	Votes	%
		Arthur A. Small		99.25
		Write-ins		0.75
Total votes				100.00

Republican primary

Party		Candidate	Votes	%
		Chuck Grassley (Incumbent)		99.72
		Write-ins		0.28
Total votes				100.00%

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Iowa general election

Party		Candidate	Votes	%	±%
		Arthur A. Small	412,365	27.88
		Christy Ann Welty	15,218	1.03
		Daryl A. Northrop	11,121	0.75
		Edwin Fruit	1,874	0.13
	Write-ins		475	0.03
Majority			625,810	42.31
Turnout			1,479,228

Kansas

Incumbent Republican Sam Brownback won re-election to a second term over Democratic railroad engineer Lee Jones.

Democratic primary

Party		Candidate	Votes	%
		Robert A. Conroy		55.92
		Lee Jones		44.08
Total votes				100.00

Though Robert Conroy won the Democratic nomination, he dropped out of the race shortly after becoming the nominee, noting that he expected Jones to win and was tired of campaigning. The Kansas Democratic Party selected Lee Jones as the replacement candidate.

Republican primary

Party		Candidate	Votes	%
		Sam Brownback (Incumbent)		86.99
		Arch Naramore		13.01
Total votes				100.00

Brownback raised $2.5 million for his re-election campaign, while Jones raised only $90,000. Kansas last elected a Democratic senator in 1932. Brownback was popular in the state.

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Kansas general election

Party		Candidate	Votes	%	±%
		Lee Jones	310,337	27.49
		Steven A. Rosile	21,842	1.93
		George Cook	15,980	1.42
Majority			470,526	41.68
Turnout			1,129,022

Kentucky

Incumbent Republican Jim Bunning won re-election to a second term. Democratic primary front runner Paul E. Patton, the governor, saw his career implode in a scandal over an extramarital affair. Eventually, the Democrats settled on Daniel Mongiardo, a relatively unknown doctor and state senator from Hazard, Kentucky.

Democratic primary

Party		Candidate	Votes	%
		Daniel Mongiardo		64.92
		David L. Williams		35.08
Total votes				100.00

Republican primary

Party		Candidate	Votes	%
		Jim Bunning (incumbent)		84.00
		Barry Metcalf		16.00
Total votes				100.00

During his re-election bid in 2004, controversy erupted when Bunning described Mongiardo as looking "like one of Saddam Hussein's sons." Bunning apologized, then later went on to declare that Mongiardo's "thugs" had assaulted his wife.

Bunning had an estimated $4 million campaign war chest, while Mongiardo had only $600,000. The Democrats began increasing financial support to Mongiardo when it became apparent that Bunning's bizarre behavior was costing him votes, purchasing more than $800,000 worth of additional television airtime on his behalf.

The November 2 election was one of the closest in Kentucky history. The race turned out to be close, with Mongiardo leading with as many as 80% of the returns coming in. However, Bunning eventually won by just over one percentage point. Some analysts felt that because of President George Bush's 20% margin of victory in the state, Bunning was able to effectively ride the President's coattails to victory.

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Kentucky general election

Party		Candidate	Votes	%	±%
		Daniel Mongiardo	850,855	49.34
Turnout			1,724,362

Louisiana

Incumbent Democrat John Breaux retired. Republican U.S. Representative David Vitter won the jungle primary over Democratic U.S. Representative Chris John with 51% of the vote and avoided a runoff.

Breaux endorsed Chris John prior to the jungle primary.

During the campaign, Vitter was accused by a member of the Louisiana Republican State Central Committee of having had a lengthy affair with a prostitute in New Orleans. Vitter responded that the allegation was "absolutely and completely untrue" and that it was "just crass Louisiana politics." The allegation later turned out to be true.

Vitter won the Louisiana jungle primary with 51% of the vote, avoiding the need for a runoff. John received 29.2% of the vote and Kennedy (no relation to the Massachusetts Kennedys), took 14.9%.

Vitter won at least a plurality in 56 of Louisiana's 64 parishes. John carried nine parishes, all but two of which (Iberville and Orleans) are part of the House district he represented.

Kennedy changed parties and ran as Republican in 2008 against Louisiana's senior senator, Democrat Mary Landrieu. Landrieu was re-elected. Kennedy succeeded Vitter when he won the 2016 election for the seat over Democrat Foster Campbell.

Vitter was the first Republican in Louisiana to be popularly elected as a U.S. Senator. The previous Republican Senator, William Pitt Kellogg, was chosen by the state legislature in 1876, in accordance with the process used before the Seventeenth Amendment to the United States Constitution went into effect in 1914.

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2004 Louisiana United States Senate election

Party		Candidate	Votes	%	±%
		Chris John	542,150	29.34
		John Neely Kennedy	275,821	14.92
		Arthur A. Morrell	47,222	2.56
	Independent	Richard M. Fontanesi	15,097	0.82
	Independent	R. A. "Skip" Galan	12,463	0.67
		Sam Houston Melton, Jr.	12,289	0.66
Majority			400,864	21.69
Turnout			1,848,056

Maryland

Incumbent Democrat Barbara Mikulski won re-election to a fourth term over Republican State Senator E. J. Pipkin.

Democratic primary

Party		Candidate	Votes	%
		Barbara A. Mikulski (Incumbent)		89.88
		A. Robert Kaufman		7.06
		Sid Altman		3.06
Total votes				100.00

Republican primary

Party		Candidate	Votes	%
		E. J. Pipkin		50.58
		John Stafford		10.56
		Eileen Martin		8.46
		Dorothy Curry Jennings		7.49
		Earl S. Gordon		5.93
		Gene Zarwell		4.94
		Ray Bly		4.50
		James A. Kodak		3.84
		Corrogan R. Vaughn		3.71
Total votes				100.00

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Maryland general election

Party		Candidate	Votes	%	±%
		E. J. Pipkin	783,055	33.72
		Maria Allwine	24,816	1.07
		Thomas Trump	9,009	0.39
	Write-ins		360	0.02
Majority			721,636	31.08
Total votes			2,321,931	100.00

Missouri

Incumbent Republican Kit Bond won re-election to a fourth term over Nancy Farmer, State Treasurer of Missouri and former Missouri State Representative.

Democratic primary

Party		Candidate	Votes	%
		Nancy Farmer		73.68
		Charles Berry		19.37
		Ronald Bonar		6.95
Total votes				100.00

Libertarian primary

Party		Candidate	Votes	%
		Kevin Tull		100.00
Total votes				100.00

Republican primary

Party		Candidate	Votes	%
		Kit Bond (Incumbent)		88.08
		Mike Steger		11.92
Total votes				100.00

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Missouri general election

Party		Candidate	Votes	%	±%
		Nancy Farmer	1,158,261	42.80
		Kevin Tull	19,648	0.73
		Don Griffin	10,404	0.38
Majority			359,828	13.30
Turnout			2,706,402

Nevada

Incumbent Democrat Harry Reid, the Senate Minority Whip, won re-election to a fourth term over Republican anti-gay marriage activist Richard Ziser.

Republican primary

Party		Candidate	Votes	%
		Richard Ziser		33.50
		Kenneth A. Wegner		17.69
		Robert Brown		16.16
		None of these candidates		13.91
		Royle Melton		8.72
		Cherie M. Tilley		8.56
		Carlo Poliak		1.46
Total votes				100.00

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Nevada general election

Party		Candidate	Votes	%	±%
		Richard Ziser	284,640	35.14
	None of These Candidates		12,968	1.60	-0.26%
		Thomas L. Hurst	9,559	1.18
		David K. Schumann	6,001	0.74
		Gary Marinch	2,095	0.26
Majority			210,165	25.94
Turnout			810,068

New Hampshire

Incumbent Republican Judd Gregg won re-election to his third term, easily beating Democratic activist Doris Haddock.

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NH U.S. Senate Election, 2004

Party		Candidate	Votes	%	±%
		Doris R. Haddock	221,549	33.7
		Ken Blevens	102	0.0
Total votes			657,086	100.00

New York

Incumbent Democrat Chuck Schumer won re-election to his second term, easily beating Republican Howard Mills.

2004 United States Senate election, New York

Party		Candidate	Votes	%	±%
		Chuck Schumer	4,384,907
		Chuck Schumer	216,198
		Chuck Schumer	168,719
	total	Chuck Schumer (Incumbent)	4,769,824	71.2%
		Howard Mills	1,625,069	24.2%
		Marilyn O'Grady	220,960	3.3%
		David McReynolds	36,942	0.3%
		Don Silberger	19,073	0.3%
	Builders Party	Abe Hirschfeld	16,196	0.2%
		Martin Koppel	14,811	0.2%
Majority			3,144,755	46.92%
Turnout			6,702,875
	hold		Swing

North Carolina

Incumbent Democrat John Edwards decided to retire from the Senate, ran unsuccessfully for the 2004 Democratic Party presidential nomination, and became his party's vice presidential nominee. Republican Richard Burr won the open seat.

Erskine Bowles won the Democratic Party's nomination unopposed. He had been the party's nominee for the state's other Senate seat in 2002.

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Republican primary

Party		Candidate	Votes	%	±%
		John Ross Hendrix	25,971	7.55
		Albert Wiley	15,585	4.53
Turnout			343,875

Both major-party candidates engaged in negative campaign tactics, with Bowles' campaign attacking Burr for special interest donations and his positions on trade legislation, and Burr's campaign attacking Bowles for his connections to the Clinton administration. Both attacks had basis in reality: Burr's campaign raised funds from multiple political action committees and at least 72 of the 100 largest Fortune 500 companies, while Bowles departed from the Clinton administration in the midst of the Monica Lewinsky scandal.

Burr won the election by 4%. He joined the Senate in January 2005. Bowles went on to become the president of the UNC system.

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North Carolina general election

Party		Candidate	Votes	%	±%
		Erskine Bowles	1,632,527	47.02
		Tom Bailey	47,743	1.38
	Nonpartisan	Walker F. Rucker (write-in)	362	0.01
Turnout			3,471,720

North Dakota

Incumbent Democrat Byron Dorgan won re-election to a third term over Republican attorney Mike Liffrig.

2004 United States Senate election in North Dakota

Party		Candidate	Votes	%
		Byron Dorgan (Incumbent)		68.28
		Mike Liffrig		31.72
Total votes				64.90

Ohio

Incumbent Republican George Voinovich won re-election to a second term over Democrat Eric Fingerhut, state senator and former U.S. Representative from Ohio's 19th congressional district.

Republican primary

Party		Candidate	Votes	%
		George Voinovich (Incumbent)		76.61
		John Mitchel		23.39
Total votes				100.00

Democratic primary

Party		Candidate	Votes	%
		Eric Fingerhut		70.79
		Norbert Dennerll		29.21
Total votes				100.00

A popular U.S. Senator, Voinovich was the heavy favorite to win the election. He had over $9 million in the bank, while his opponent barely had $1.5 million. Fingerhut's campaign was overshadowed by the possible campaign of Democrat and former mayor of Cincinnati Jerry Springer, who eventually declined to run.

Voinovich was considered a moderate on some issues. He supported gun control and amnesty for illegal immigrants.

Surprisingly, Voinovich's biggest advantage was getting support from the most Democratic-leaning county in the state, Cuyahoga County, Ohio. Kerry carried it with almost 67% of the vote, by far his best performance in the state in 2004. It is the home of Cleveland and it is also most populous county in the state. Voinovich was a former mayor of Cleveland. In addition, he catered to Cleveland's large Jewish population by visiting Israel six times as a first-term U.S. Senator. He also consistently voted for aid to Israel through foreign appropriations bills. He had supported resolutions reaffirming Israel's right to self-defense and condemned Palestinian terrorist attacks. In addition, Fingerhut's home base was in the Cleveland area, and therefore he had to cut in through the incumbent's home base in order to even make the election close.

In a September University of Cincinnati poll, the incumbent lead 64% to 34%. In an October ABC News poll, Voinovich was winning 60% to 35%. He led across almost all demographic groups Only among Democrats, non-whites, liberals, and those who pick health care as #1 issue favor Fingerhut. The election coincided with the presidential election, where Ohio was a swing state. 27% of Voinovich's supporters preferred U.S. Senator John Kerry for president.

Ohio general election

Party		Candidate	Votes	%
		George Voinovich (Incumbent)		63.85
		Eric Fingerhut		36.14
	Independent	Helen Meyers		0.01
Turnout			5,426,196	100.00

Oklahoma

Incumbent Republican Don Nickles decided to retire instead of seeking a fifth term. Republican nominee Tom Coburn won the open seat, beating Brad Carson, a Democratic U.S. Representative.

Democratic primary

Party		Candidate	Votes	%
		Brad Carson		79.37
		Carroll Fisher		8.05
		Jim Rogers		5.72
		Monte E. Johnson		4.90
		W. B. G. Woodson		1.96
Total votes				100.00

Kirk Humphreys, the former mayor of Oklahoma City, ran for the United States Senate with institutional conservative support, namely from Senators Don Nickles and Jim Inhofe, as well as former Congressman J. C. Watts. However, Coburn received support from the Club for Growth and conservative activists within Oklahoma. Humphreys noted, "[Coburn is] kind of a cult hero in the conservative portion of our party, not just in Oklahoma. You can't get right of the guy." Much of Coburn's celebrity within the Republican Party came from his tenure in Congress, where he battled House Speaker Newt Gingrich, who he argued was moving the party to the center of the political spectrum due to their excessive federal spending. Coburn's maverick nature culminated itself in 2000 when he backed conservative activist Alan Keyes for President rather than George W. Bush or John McCain.

Ultimately, Coburn triumphed over Humphreys, Anthony, and Hunt in the primary, winning every county in Oklahoma except for tiny Harmon County.

Republican primary

Party		Candidate	Votes	%
		Tom Coburn		61.23
		Kirk Humphreys		25.12
		Bob Anthony		12.41
		Jay Richard Hunt		1.23
Total votes				100.00

Carson and Coburn engaged each other head-on in one of the year's most brutal Senate contests. Coburn and the National Republican Senatorial Committee attacked Carson for being too liberal for Oklahoma and for being a vote in lockstep with John Kerry, Hillary Clinton, and Ted Kennedy. To drive the point home, one television advertisement aired by the Coburn campaign accused Carson of being "dangerously liberal" and not supporting the war on terrorism. Coburn was aided in this effort by the fact that the Kerry campaign did not contest the state of Oklahoma and that incumbent President George W. Bush was expected to win Oklahoma comfortably. This was compounded by the fact that Vice-President Dick Cheney campaigned for Coburn and appeared in several television advertisements for him. Carson countered by emphasizing his Stilwell roots and his moderation, specifically, bringing attention to the fact that he fought for greater governmental oversight of nursing home care for the elderly. Carson responded to the attacks against him by countering that his opponent had committed Medicaid fraud years prior, in an event that reportedly left a woman sterilized without her consent. Ultimately, however, Carson was not able to overcome Oklahoma's conservative nature and Senator Kerry's abysmal performance in Oklahoma, and he was defeated by Coburn by 11.5%. As of 2022, the result remains the closest the Democrats have come to winning a Senate election in Oklahoma since Republican Don Nickles was first elected to the Senate by 8.7% in 1980.

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2004 United States Senate election in Oklahoma

Party		Candidate	Votes	%	±%
		Brad Carson	596,750	41.24
	Independent	Sheila Bilyeu	86,663	5.99
Majority			166,683	11.52
Turnout			1,446,846

Oregon

Incumbent Democrat Ron Wyden won re-election to a second full term over Republican rancher Al King.

Oregon general election

Party		Candidate	Votes	%	±%
		Ron Wyden (incumbent)	1,128,728	63.39
		Al King	565,254	31.75
		Teresa Keane	43,053	2.41
		Dan Fitzgerald	29,582	1.66
		David Brownlow	12,397	0.70
	Write-In	Misc.	1,536	0.08
Majority			563,474	31.64
Turnout			1,780,550

Pennsylvania

Incumbent Republican Arlen Specter won re-election to a fifth term.

Democrats had difficulty recruiting top tier candidates against the popular Specter. Among the Democrats to decline to run for the nomination were Treasurer (and former Republican) Barbara Hafer, Public Utilities Commissioner John Hanger, real estate mogul Howard Hanna, State Representative (and also former Republican) John Lawless, and State Senator (and future Congresswoman) Allyson Schwartz.

Congressman Hoeffel ended up running unopposed for the Democratic nomination. Software businessman Charlie Crystle was considered a strong possible candidate, but he dropped out before the election.

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Democratic Primary Election

Party		Candidate	Votes	%	±%

File:Pat Toomey Congress.jpg

U.S. Representative Pat Toomey

File:2004 Pennsylvania U.S. Senate Republican primary results map by county.svg

GOP Primary results by county

Specter faced a primary challenge from U.S. Representative Pat Toomey. Despite the state Republican Party's strong history of embracing a moderate philosophy, the influence of conservatism among rank-and-file members had been steadily growing for decades; because of his liberal social views, Specter was often considered to be a "Republican in Name Only" by the right. Although Specter had a huge fundraising advantage, Toomey was aided by $2 million of advertising from the Club for Growth, a conservative political action committee that focuses on fiscal issues and targets moderate Republican incumbents. Toomey criticized Specter as a spendthrift on economic policy and as out of touch with his own party on social issues. Although Toomey had difficulty with name recognition early in the campaign, he built huge momentum over the final weeks preceding the primary, and Specter appeared to have transitioned from having a comfortable lead to being behind his challenger

Specter received a huge boost from the vocal support of President George W. Bush; most of the state's Republican establishment also closed ranks behind Specter. This included Pennsylvania's other U.S. Senator, Rick Santorum, who was noted for his social conservative views. Multiple Republicans at the state and national level feared that if Toomey beat Specter, he wouldn't be able to defend the seat against his Democratic opponent.

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Republican primary

Party		Candidate	Votes	%	±%
		Pat Toomey	513,693	49.18

For Democrats, hope of winning the election centered on Toomey's defeat of Specter. However, after the challenge from the right failed, enthusiasm from the party establishment waned and Hoeffel had difficulty matching the name recognition and fundraising power of his opponent Despite contempt from conservatives, Specter enjoyed high levels of support from independent voters and, as in previous elections, a surprisingly large crossover from Democratic voters. Even in the areas in which Toomey performed best in the Republican primary (mainly the state's conservative, rural center), Specter performed well. Except for his large margin of victory in almost uniformly Democratic Philadelphia, Hoeffel was crushed at the polls; his only other wins came by close margins in three metro Pittsburgh counties; although President Bush proved to be unpopular in the state, voters were not willing to abandon Specter over party affiliation. Toomey would go on to elect in the U.S. Senate in 2010.

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Pennsylvania General

Party		Candidate	Votes	%	±%
		Joe Hoeffel	2,334,126	41.99
		Jim Clymer	220,056	3.96
		Betsy Summers	79,263	1.43
Total votes			5,559,105	100.00

South Carolina

Incumbent Democrat Fritz Hollings decided to retire. Jim DeMint, a Republican U.S. Representative won the open seat over Democrat Inez Tenenbaum, the South Carolina Superintendent of Education.

Democratic primary

Party		Candidate	Votes	%
		Inez Tenenbaum		75.5
		Ben Frasier		24.5

The Senate election two years earlier in 2002 did not have a primary election because the South Carolina Republicans were more preoccupied with the gubernatorial contest, despite having the first open senate seat in 40 years. The retirement of Democratic Senator Fritz Hollings gave the Republicans an opportunity to pick up the seat and with no other interesting positions up for election in 2004, a crowded field developed in the Republican primary. Furthermore, the Republicans were motivated by having President Bush at the top of the ticket enabling them to ride his coattails to victory.

Former Governor David Beasley, from the Pee Dee, entered the race and quickly emerged as the frontrunner because of his support from the evangelical voters. However, during his term as governor from 1994 to 1998 he had greatly angered the electorate by proposing to remove the Confederate Naval Jack from the dome of the statehouse and by being against the adoption of a state lottery to provide for college scholarships. Both positions led to the loss of his re-election in 1998 and the issues continued to trouble him in the Senate race.

The battle for second place in the primary was between Upstate congressman, Jim DeMint, and Charleston developer Thomas Ravenel. DeMint was able to squeak out a second-place finish because Charlie Condon, a former Attorney General of South Carolina, split the Lowcountry vote with Ravenel thus providing DeMint the margin he needed. In addition, while a number of voters were attracted to the Ravenel campaign and felt that he had a future in politics, they believed that he should set his sights on a less high-profile office first before trying to become senator. Resigned to defeat, Ravenel endorsed DeMint in the runoff election.

In the runoff election on June 22, 2004, DeMint scored a surprising victory over Beasley. Ravenel's endorsement of DeMint proved crucial as the Lowcountry counties heavily went for the Representative from the Upstate. Also, Beasley had burnt too many bridges while governor and was unable to increase his share of the vote in the runoff.

Republican Primary Election
Candidate	Votes	%
David Beasley	107,847	36.6%
Jim DeMint	77,567	26.3%
Thomas Ravenel	73,167	24.8%
Charlie Condon	27,694	9.4%
Mark McBride	6,479	2.2%
Orly Benny Davis	1,915	0.7%

Republican Primary Election Runoff
Candidate	Votes	%	±%
Jim DeMint	154,644	59.2%	+32.9%
David Beasley	106,480	40.8%	+4.2%

DeMint entered the general election campaign severely weakened from the primary fight, having spent most of his campaign funds. He stressed to the voters that he would follow conservative principles and provide an important Republican vote in the closely divided Senate. Democrats fared poorly in statewide elections in South Carolina, so Tenenbaum tried to make the race about issues rather than party identification. She attacked DeMint's support of the FairTax proposal because it would increase the sales tax by 23%. The election victory by DeMint merely cemented South Carolina's shift to the Republican column as the best candidate the Democrats could offer was soundly defeated by the typical 10 point margin.

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South Carolina U.S. Senate Election, 2004

Party		Candidate	Votes	%	±%
		Inez Tenenbaum	704,384	44.1
		Patrick Tyndall	13,464	0.8
		Rebekah E. Sutherland	10,678	0.7
	United Citizens Party	Tee Ferguson	5,859	0.4
		Efia Nwangaza*	4,245	0.3
	No party	Write-Ins	1,286	0.1
Majority			152,783	9.5
Turnout			1,597,221	69.0

• Efia Nwangaza ran under the Independence Party in Aiken and Calhoun counties; her totals are combined.

South Dakota

In the 2004 congressional elections, Daschle lost his seat to Republican challenger and former U.S. Representative John Thune in a bitterly contested battle. Thune prevailed by a narrow 50.6–49.4% margin, of 4,508 votes. Senate Majority Leader Bill Frist visited South Dakota to campaign for Thune, breaking an unwritten tradition that one party's leader in the Senate would not campaign directly for the other's defeat. Daschle's loss resulted in the first defeat of a Senate floor leader since 1952 when Arizona Senator Ernest McFarland lost his seat to Barry Goldwater. Daschle's Senate term expired on January 3, 2005.

Throughout the campaign, Thune, along with Frist, President Bush, and Vice President Cheney, frequently accused Daschle of being the "chief obstructionist" of Bush's agenda and charged him with using filibusters to block confirmation of several of Bush's nominees to the federal judiciary. Thune also used moral values such as issues surrounding same-sex marriage and abortion to convince South Dakota voters that Daschle's positions on such topics were out-of-sync with the state's residents. The Republican candidate also drove home his strong support for the President while blasting Daschle for his vehement opposition to Bush. He attempted to sway voters by remembering that Bush won South Dakota in a landslide in 2000 and had a high job-approval rating among South Dakotans. His opponent, the Minority Leader, repeatedly argued that he was funneling money into South Dakota for vital federal highway and water pet projects.

Daschle responded to Thune's claim that he was a partisan anti-Bush obstructionist by pointing to his action just nine days after the September 11 attacks when he hugged President Bush on the Senate floor following Bush's address to Congress and the nation. He also hit back by alleging that Thune wanted to "rubber stamp what the administration is doing." Daschle's use of the video of his embrace of Bush forced the Republican National Committee to demand that the ad be pulled, claiming that it suggests that Bush endorses Daschle. Shortly following the airing of the ad, in a nationally televised debate on NBC's Meet the Press, Thune accused Daschle of "emboldening the enemy" in his skepticism of the Iraq War.

Daschle also noticeably relied heavily on the power of incumbency to win a fourth term. Some also argued that Stephanie Herseth's election to the state's only House seat hurt Daschle, as voters may not have been comfortable sending an all-Democratic delegation to Congress for the first time in decades. Accusations that Daschle was possibly considering no longer being an official resident of South Dakota was believed to have offended voters there. Others have analyzed that Daschle's lengthy consideration and eventual rejection of a potential run for the presidency in 2004 took a toll on South Dakotans, who felt betrayed and used by Daschle as a result.

When the race began in early 2004, Daschle led by 7 points in January and February. By May, his lead minimized to just 2 points and into the summer polls showed a varying number of trends: either Daschle held a slim 1- to 2-point lead or Thune held a slim 1- to 2-point lead or the race was tied right down the middle. Throughout September, Daschle led Thune by margins of 2 to 5 percent while during the entire month of October into the November 2 election, most polls showed that Thune and Daschle were dead even, usually tied 49–49 among likely voters. Some polls showed either Thune or Daschle leading by extremely slim margins.

Thune was an aide to former Senator James Abdnor, the man Daschle defeated in 1986 to gain his seat in the Senate.

Daschle spent a great deal of time and energy campaigning for his fellow Democrat Tim Johnson in 2002, who barely defeated Thune by 524 votes. He argued that by re-electing Johnson, South Dakota would be better off because Johnson would help to keep Daschle Majority Leader. However, in the end, while Johnson won, other states voted for enough Republicans that Daschle was no longer majority leader. Furthermore, Thune's whisker-close defeat in 2002 freed him up to run against Daschle in 2004. Had Daschle not put his considerable weight to re-electing Johnson, it seems likely that Thune would have beaten Johnson, leaving Daschle without a strong challenger for the upcoming election and making his re-election a certainty.

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South Dakota general election

Party		Candidate	Votes	%	±%
		Tom Daschle (Incumbent)	193,340	49.42
Majority			4,508	1.15
Turnout			391,188

Utah

Incumbent Republican Bob Bennett won re-election to a third term easily beating Democrat Paul Van Dam, former Attorney General of Utah and former Salt Lake County District Attorney.

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Utah general election

Party		Candidate	Votes	%	±%
		Paul Van Dam	258,955	28.40
		Gary R. Van Horn	17,289	1.90
		Joe LaBonte	8,824	0.97
	Write-ins		18	0.00
Majority			367,685	40.33
Turnout			911,726

Vermont

Incumbent Democrat Patrick Leahy won re-election to a sixth term.

Democratic primary

Party		Candidate	Votes	%
		Patrick Leahy (Incumbent)		94.32
		Craig Hill		5.40
		Write-ins		0.28
Total votes				100.00%

Republican primary

Party		Candidate	Votes	%
		Jack McMullen		67.69
		Peter D. Moss		14.52
		Ben Mitchell		12.10
		Write-ins		5.69
Total votes				100.00

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Vermont general election

Party		Candidate	Votes	%	±%
		Jack McMullen	75,398	24.54
	Independent	Cris Ericson	6,486	2.11
		Craig Hill	3,999	1.30
	Independent	Keith Stern	3,300	1.07
		Ben Mitchell	879	0.29
	Write-ins		174	0.06
Majority			141,574	46.08
Turnout			307,208

Washington

Incumbent Democrat Patty Murray won re-election. She became only the fourth Washington senator to win 3 consecutive terms, just after fellow Democrats Warren G. Magnuson and Scoop Jackson.

Term limits became an issue in the campaign, as Democrats seized on Nethercutt's broken term-limits pledge that he had made when he unseated Speaker Tom Foley in 1994. Nethercutt was also hampered by his lack of name recognition in the more densely populated western part of the state, home to two-thirds of the state's population. Washington has not elected a senator from east of the Cascades since Miles Poindexter in 1916. Other important issues included national security and the war in Iraq. Nethercutt supported the invasion of Iraq, while Murray opposed it. Nethercutt was a heavy underdog from the start, and his campaign never gained much traction. In November, he lost by 12 points, receiving 43 percent of the vote to Murray's 55 percent.

Washington general election

Party		Candidate	Votes	%
		Patty Murray (Incumbent)		54.98
		George Nethercutt		42.74
		J. Mills		1.21
		Mark Wilson		1.08
Total votes				100.00

Wisconsin

Incumbent Democrat Russ Feingold won re-election to a third term.

Republican businessman and army veteran Tim Michels insisted he had more real world experience than Feingold, someone he called an "extreme liberal" who's out of touch with Wisconsin voters. Feingold attacked back by saying that any Republican would be a rubber stamp for President Bush. The incumbent had $2.2 million in the bank, while Michels had already spent $1 million in the primary and had only about $150,000 left.

When the NRSC was finally convinced in October that Michels had a shot, they pledged $600,000 for him.

On October 1, a poll showed Feingold leading 52% to 39%. In mid October, another poll showed Feingold winning 48% to 43%. A poll at the end of the month showed him leading 51% to 36%.

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Wisconsin general election

Party		Candidate	Votes	%
		Russ Feingold (Incumbent)		55.35
		Tim Michels		44.11
		Arif Khan		0.28
	Independent	Eugene A. Hem		0.23
Total votes				100.00

See also

• 2004 United States elections
  • 2004 United States gubernatorial elections
  • 2004 United States presidential election
  • 2004 United States House of Representatives elections
• 108th United States Congress
• 109th United States Congress

References

• List of the most expensive senatorial races, via Opensecrets.org
• Election results, via CNN
• United States Election 2004 Web Archive from the U.S. Library of Congress
• Elections Division from the Louisiana Secretary of State
• 2004 North Dakota U.S. Senate Election results
• JoinCalifornia 2004 General Election
• SmartVoter.org page on the California Senate race.
• Final results from the Secretary of State of California. Wayback Machine