2004 United States state legislative elections

For related races, see 2004 United States elections.

2004 United States state legislative elections

←  2003 November 2, 2004 2005  →
85 legislative chambers in 44 states
Majority party Minority party   Party Republican Democratic Chambers before 53 [a] 44 [a] Chambers after 50 [b] 48 Overall change 3 4
Map of upper house elections:      Democrats gained control     Democrats retained control      Republicans gained control     Republicans retained control      Split body formed      Non-partisan legislature      No regularly-scheduled elections
Map of lower house elections:      Democrats gained control     Democrats retained control      Republicans gained control     Republicans retained control      Non-partisan legislature      No regularly-scheduled elections

Elections to state legislatures were held on November 2, 2004, alongside other elections. Elections were held for 85 legislative chambers, with all states but Louisiana, Mississippi, New Jersey, Alabama, Maryland, and Virginia holding elections in at least one house. Michigan and Minnesota held elections for their lower, but not upper houses. ^[1] Six chambers in three territories and the District of Columbia were up as well.

The 2004 elections created narrow legislative divisions across the country. Both parties flipped seats and chambers across the country, with most Democratic gains coming from the Northeast and West and most Republican gains coming from the South. Over 20 states featured statehouses controlled by fewer than four seats, and nearly 30 states featured divided governments. Both parties took advantage of heavy spending from 527 organizations. ^[2]

Republicans won control of four chambers from the Democrats. The institution of term limits contributed to the Republican takeover of the Oklahoma House of Representatives, and favorable redistricting aided Republicans in winning the Georgia House of Representatives for the first time ever. ^[2] Republicans additionally won the Tennessee Senate, for the time since 1870, and the Indiana House of Representatives. ^{[3] [4]}

Democrats performed better than Republicans overall at the state-legislative level, despite their defeat in the concurrent presidential election, winning control of eight additional chambers. Favorable redistricting enabled the Democratic takeover of the Montana Legislature and their retaking of control of the North Carolina House of Representatives, which was previously tied. ^[2] Additionally, they took control of the Washington Senate; the Oregon Senate, which was previously tied; both houses of the Colorado General Assembly for the first time since 1963, and the Vermont House of Representatives. The Iowa Senate became tied after previously being controlled by the Republicans prior to the election. ^{[3] [4]} Democrats' takeover of the Montana House only came after the Montana Supreme Court declared a Democrat a victor in a contested election that evenly split the chamber. This gave Democrats control of the chamber with the help of incoming governor Brian Schweitzer. ^[5]

The Democrats also regained the title of holding the most legislative seats across the country, winning one more seat than the Republicans. ^[4]

Summary table

Regularly-scheduled elections were held in 85 of the 99 state legislative chambers in the United States. Nationwide, regularly-scheduled elections were held for 6,015 of the 7,383 legislative seats. Many legislative chambers held elections for all seats, but some legislative chambers that use staggered elections held elections for only a portion of the total seats in the chamber. ^[6] The chambers not up for election either hold regularly-scheduled elections in odd-numbered years, or have four-year terms and hold all regularly-scheduled elections in presidential midterm election years.

Note that this table only covers regularly-scheduled elections; additional special elections took place concurrently with these regularly-scheduled elections.

State	Upper House [6]				Lower House [6]
	Seats up	Total	% up	Term	Seats up	Total	% up	Term
Alabama	0	35	0	4	0	105	0	4
Alaska	19	20	95	4	40	40	100	2
Arizona	30	30	100	2	60	60	100	2
Arkansas	35	35	100	2/4 [c]	100	100	100	2
California	20	40	50	4	80	80	100	2
Colorado	18	35	51	4	65	65	100	2
Connecticut	36	36	100	2	151	151	100	2
Delaware	21	21	100	2/4 [c]	41	41	100	2
Florida	40	40	100	2/4 [c]	120	120	100	2
Georgia	56	56	100	2	180	180	100	2
Hawaii	25	25	100	2/4 [c]	51	51	100	2
Idaho	35	35	100	2	70	70	100	2
Illinois	59	59	100	2/4 [c]	118	118	100	2
Indiana	25	50	50	4	100	100	100	2
Iowa	25	50	50	4	100	100	100	2
Kansas	40	40	100	4	125	125	100	2
Kentucky	19	38	50	4	100	100	100	2
Louisiana	0	39	0	4	0	105	0	4
Maine	35	35	100	2	151	151	100	2
Maryland	0	47	0	4	0	141	0	4
Massachusetts	40	40	100	2	160	160	100	2
Michigan	0	38	0	4	110	110	100	2
Minnesota	0	67	0	2/4 [c]	134	134	100	2
Mississippi	0	52	0	4	0	122	0	4
Missouri	17	34	50	4	163	163	100	2
Montana	25	50	50	4	100	100	100	2
Nebraska	25 [d]	49 [d]	51 [d]	4	N/A (unicameral)
Nevada	10	21	48	4	42	42	100	2
New Hampshire	24	24	100	2	400	400	100	2
New Jersey	0	40	0	2/4 [c]	0	80	0	2
New Mexico	42	42	100	4	70	70	100	2
New York	62	62	100	2	150	150	100	2
North Carolina	50	50	100	2	120	120	100	2
North Dakota	23	47	49	4	47	94	50	4
Ohio	16	33	48	4	99	99	100	2
Oklahoma	24	48	50	4	101	101	100	2
Oregon	15	30	50	4	60	60	100	2
Pennsylvania	25	50	50	4	203	203	100	2
Rhode Island	38	38	100	2	75	75	100	2
South Carolina	46	46	100	4	124	124	100	2
South Dakota	35	35	100	2	70	70	100	2
Tennessee	16	33	48	4	99	99	100	2
Texas	16	31	52	2/4 [c]	150	150	100	2
Utah	15	29	52	4	75	75	100	2
Vermont	30	30	100	2	150	150	100	2
Virginia	0	40	0	4	0	100	0	2
Washington	25	49	51	4	98	98	100	2
West Virginia	17	34	50	4	100	100	100	2
Wisconsin	16	33	48	4	99	99	100	2
Wyoming	15	30	50	4	60	60	100	2
Total	1280	1971	65	N/A	4595	5411	85	N/A

Electoral predictions

Analysts expected a high level of competitiveness among chambers held by both parties, although not to the same extent as the 2002 elections, which took place following most states' legislative redistricting. The application of newly enacted term limits in some states was expected to have little effect, with the exception of the Oklahoma House of Representatives, and the close nature of the concurrent presidential election made the effects of potential presidential coattails difficult to predict. ^[7]

As the election progressed and George W. Bush's chances at winning re-election appeared to increase, outlooks changed on very few legislative chambers. Republicans made minor inroads in states in the South, especially in Oklahoma in the Georgia House of Representatives while Democrats appeared stronger in states in the Northeast and Northwest, such as Vermont and Washington. Due to the presidential election's heavy focus on foreign policy issues such as the Iraq War, the likelihood of coattails reaching all the way down to state legislative races appeared increasingly thin. The majority of state legislative chambers and individual races also remained out of reach for opposition parties due to the prevalence of partisan gerrymandering. ^[8]

Ratings are designated as follows:

• "Tossup": Competitive, no advantage
• "Lean": Competitive, slight advantage
• "Likely": Not competitive, but opposition could make significant gains
• "Safe": Not competitive at all

State	Chamber	Last election	Rothenberg Oct. 1, 2004 [8]	Result
Alaska	Senate	R 12–8	Likely R	R 12–8
	House of Representatives	R 27–13	Safe R	R 26–14
Arizona	Senate	R 17–13	Likely R	R 18–12
	House of Representatives	R 38–22	Likely R	R 38–22
Arkansas	Senate	D 27–8	Safe D	D 27–8
	House of Representatives	D 70–30	Safe D	D 72–28
California	State Senate	D 25–15	Safe D	D 25–15
	State Assembly	D 48–32	Safe D	D 48–32
Colorado	Senate	R 18–17	Lean R	D 18–17
	House of Representatives	R 37–28	Likely R	D 35–30
Connecticut	State Senate	D 21–15	Safe D	D 24–12
	House of Representatives	D 94–57	Safe D	D 99–52
Delaware	Senate	D 13–8	Safe D	D 13–8
	House of Representatives	R 29–12	Safe R	R 26–15
Florida	Senate	R 26–14	Safe R	R 26–14
	House of Representatives	R 81–39	Safe R	R 84–36
Georgia	State Senate	R 30–26	Lean R	R 34–22
	House of Representatives	D 107–72–1	Lean D	R 99–80–1
Hawaii	Senate	D 20–5	Safe D	D 20–5
	House of Representatives	D 36–15	Safe D	D 41–10
Idaho	Senate	R 28–7	Safe R	R 28–7
	House of Representatives	R 54–16	Safe R	R 57–13
Illinois	Senate	D 32–26–1	Safe D	D 31–27–1
	House of Representatives	D 66–52	Safe D	D 65–53
Indiana	Senate	R 32–18	Safe R	R 33–17
	House of Representatives	D 51–49	Tossup	R 52–48
Iowa	Senate	R 29–21	Lean R	25–25
	House of Representatives	R 54–46	Lean R	R 51–49
Kansas	Senate	R 30–10	Safe R	R 30–10
	House of Representatives	R 80–45	Safe R	R 83–42
Kentucky	Senate	R 21–17	Likely R	R 22–15
	House of Representatives	D 65–35	Likely D	D 57–43
Maine	Senate	D 18–17	Tossup	D 18–17
	House of Representatives	D 80–67–3–1	Likely D	D 76–73–1–1
Massachusetts	Senate	D 34–6	Safe D	D 34–6
	House of Representatives	D 135–23–1	Safe D	D 137–23
Michigan	House of Representatives	R 62–48	Likely R	R 58–52
Minnesota	House of Representatives	R 81–53	Safe R	R 68–66
Missouri	Senate	R 20–14	Likely R	R 23–11
	House of Representatives	R 90–73	Likely R	R 97–66
Montana	Senate	R 29–21	Lean R	D 27–23
	House of Representatives	R 53–47	Lean R	D 50–50
Nevada	Senate	R 13–8	Likely R	R 12–9
	Assembly	D 23–19	Lean D	D 26–16
New Hampshire	Senate	R 18–6	Safe R	R 16–8
	House of Representatives	R 278–122	Safe R	R 249–151
New Mexico	Senate	D 24–18	Likely D	D 24–18
	House of Representatives	D 43–27	Safe D	D 42–28
New York	State Senate	R 37–25	Safe R	R 35–27
	State Assembly	D 102–48	Safe D	D 104–46
North Carolina	Senate	D 28–22	Lean D	D 29–21
	House of Representatives	R 61–59 [e]	Tossup	D 63–57
North Dakota	Senate	R 31–16	Safe R	R 32–15
	House of Representatives	R 66–28	Safe R	R 67–27
Ohio	Senate	R 22–11	Safe R	R 22–11
	House of Representatives	R 62–37	Safe R	R 61–38
Oklahoma	Senate	D 28–20	Lean D	D 26–22
	House of Representatives	D 53–48	Tossup	R 57–44
Oregon	State Senate	15–15	Lean D (flip)	D 17–13
	House of Representatives	R 35–25	Likely R	R 33–27
Pennsylvania	State Senate	R 29–21	Likely R	R 30–20
	House of Representatives	R 110–93	Likely R	R 110–93
Rhode Island	Senate	D 32–6	Safe D	D 33–5
	House of Representatives	D 63–11–1	Safe D	D 59–16
South Carolina	Senate	R 25–21	Safe R	R 26–20
	House of Representatives	R 73–51	Safe R	R 74–50
South Dakota	Senate	R 26–9	Safe R	R 25–10
	House of Representatives	R 49–21	Safe R	R 50–20
Tennessee	Senate	D 18–15	Lean D	R 17–16
	House of Representatives	D 54–45	Lean D	D 53–46
Texas	Senate	R 19–12	Safe R	R 19–12
	House of Representatives	R 88–62	Safe R	R 87–63
Utah	State Senate	R 22–7	Safe R	R 21–8
	House of Representatives	R 56–19	Safe R	R 56–19
Vermont	Senate	D 19–11	Safe D	D 21–9
	House of Representatives	R 73–70–4–3	Tossup	D 83–60–6–1
Washington	State Senate	R 25–24	Tossup	D 26–23
	House of Representatives	D 52–46	Tossup	D 55–43
West Virginia	Senate	D 24–10	Safe D	D 21–13
	House of Delegates	D 68–32	Safe D	D 68–32
Wisconsin	Senate	R 18–15	Likely R	R 19–14
	State Assembly	R 58–41	Likely R	R 60–39
Wyoming	Senate	R 20–10	Safe R	R 23–7
	House of Representatives	R 45–15	Safe R	R 46–14

Maps

• 
  Upper house seats by party holding majority in each state
  

  Republican   50–60%   60–70%   70–80%   80–90%

  Democratic   50–60%   60–70%   70–80%   80–90%

  Tie   50%

• 
  Lower house seats by party holding majority in each state
  

  Republican   50–60%   60–70%   70–80%   80–90%

  Democratic   50–60%   60–70%   70–80%   80–90%

  Tie   50%

• 
  Net changes to upper house seats after the 2004 elections
       +1 Dem seat     +2 Dem seats     +3–4 Dem seats     +6 Dem seats
       +1 Rep seat     +2 Rep seats     +3 Rep seats
• 
  Net changes to lower house seats after the 2004 elections
       +1 Dem seat     +2 Dem seats     +3–5 Dem seats     +7–29 Dem seats
       +1 Rep seat     +2 Rep seats     +3–5 Rep seats     +6–25 Rep seats

State summaries

Alaska

Main articles: 2004 Alaska Senate election and 2004 Alaska House of Representatives election

All of the seats of the Alaska House of Representatives and half of the Alaska Senate were up for election. Republicans maintained control of both chambers.

Alaska Senate

Party		Before	After	Change
	Republican	12	12
	Democratic	8	8
Total		20	20

Alaska House of Representatives

Party		Before	After	Change
	Republican	27	26	1
	Democratic	13	14	1
Total		40	40

Arizona

Main articles: 2004 Arizona Senate election and 2004 Arizona House of Representatives election

All of the seats of the Arizona Legislature were up for election. Republicans maintained control of both state legislative chambers.

Arizona Senate

Party		Before	After	Change
	Republican	17	18	1
	Democratic	13	12	1
Total		30	30

Arizona House of Representatives

Party		Before	After	Change
	Republican	39	38	1
	Democratic	20	22	2
	Independent	1	0	1
Total		60	60

Arkansas

Main articles: 2004 Arkansas State Senate election and 2004 Arkansas House of Representatives election

All of the seats of the Arkansas House of Representatives and half of the Arkansas Senate were up for election. Democrats maintained control of both state legislative chambers.

Arkansas Senate

Party		Before	After	Change
	Democratic	27	27
	Republican	8	8
Total		35	35

Arkansas House of Representatives

Party		Before	After	Change
	Democratic	70	72	2
	Republican	30	28	2
Total		100	100

California

Main articles: 2004 California State Senate election and 2004 California State Assembly election

All of the seats of the California House of Representatives and half of the California Senate were up for election. Democrats maintained control of both state legislative chambers.

California State Senate

Party		Before	After	Change
	Democratic	25	25
	Republican	15	15
Total		40	40

California State Assembly

Party		Before	After	Change
	Democratic	48	48
	Republican	32	32
Total		80	80

Colorado

Main articles: 2004 Colorado Senate election and 2004 Colorado House of Representatives election

All of the seats of the Colorado House of Representatives and half of the Colorado Senate were up for election. Democrats won control of both chambers from the Republicans.

Colorado Senate

Party		Before	After	Change
	Democratic	17	18	1
	Republican	18	17	1
Total		35	35

Colorado House of Representatives

Party		Before	After	Change
	Democratic	28	35	7
	Republican	37	30	7
Total		65	65

Connecticut

Main articles: 2004 Connecticut State Senate election and 2004 Connecticut House of Representatives election

All of the seats of the Connecticut Legislature were up for election. Democrats maintained control of both state legislative chambers.

Connecticut State Senate

Party		Before	After	Change
	Democratic	21	24	3
	Republican	15	12	3
Total		36	36

Connecticut House of Representatives

Party		Before	After	Change
	Democratic	94	99	5
	Republican	57	52	5
Total		151	151

Delaware

Main articles: 2004 Delaware Senate election and 2004 Delaware House of Representatives election

All of the seats of the Delaware House of Representatives and half of the Delaware Senate were up for election. Democrats maintained control of the Senate while Republicans maintained control of the House.

Delaware Senate

Party		Before	After	Change
	Democratic	13	13
	Republican	8	8
Total		21	21

Delaware House of Representatives

Party		Before	After	Change
	Republican	29	26	3
	Democratic	12	15	3
Total		41	41

Florida

Main articles: 2004 Florida Senate election and 2004 Florida House of Representatives election

All of the seats of the Florida House of Representatives and half of the Florida Senate were up for election. Republicans maintained control of both state legislative chambers.

Florida Senate

Party		Before	After	Change
	Republican	26	26
	Democratic	14	14
Total		40	40

Florida House of Representatives

Party		Before	After	Change
	Republican	81	84	3
	Democratic	35	42	3
Total		120	120

Georgia

Main articles: 2004 Georgia State Senate election and 2004 Georgia House of Representatives election

All of the seats of the Georgia Legislature were up for election. Republicans maintained control of the Senate and won control of the House.

Georgia State Senate

Party		Before	After	Change
	Republican	34	34
	Democratic	22	22
Total		56	56

Georgia House of Representatives

Party		Before	After	Change
	Republican	74	99	25
	Democratic	105	80	25
	Independent	1	1
Total		180	180

Hawaii

Main articles: 2004 Hawaii Senate election and 2004 Hawaii House of Representatives election

All of the seats of the Hawaii House of Representatives and half of the Hawaii Senate were up for election. Democrats maintained control of both state legislative chambers.

Hawaii Senate

Party		Before	After	Change
	Democratic	20	20
	Republican	5	5
Total		25	25

Hawaii House of Representatives

Party		Before	After	Change
	Democratic	36	41	5
	Republican	15	10	5
Total		51	51

Idaho

Main articles: 2004 Idaho Senate election and 2004 Idaho House of Representatives election

All of the seats of the Idaho Legislature were up for election. Republicans maintained control of both state legislative chambers.

Idaho Senate

Party		Before	After	Change
	Republican	28	28
	Democratic	7	7
Total		35	35

Idaho House of Representatives

Party		Before	After	Change
	Republican	54	57	3
	Democratic	16	13	3
Total		70	70

Illinois

Main articles: 2004 Illinois Senate election and 2004 Illinois House of Representatives election

All of the seats of the Illinois House of Representatives and 2/3rds of the Illinois Senate were up for election. Democrats maintained control of both state legislative chambers.

Illinois Senate

Party		Before	After	Change
	Democratic	32	31	1
	Republican	26	27	1
	Independent	1	1
Total		59	59

Illinois House of Representatives

Party		Before	After	Change
	Democratic	66	65	1
	Republican	52	53	1
Total		118	118

Indiana

Main articles: 2004 Indiana State Senate election and 2004 Indiana House of Representatives election

All of the seats of the Indiana House of Representatives and half of the Indiana Senate were up for election. Republicans maintained control of the Senate and gained control of the House of Representatives.

Indiana Senate

Party		Before	After	Change
	Republican	32	33	1
	Democratic	18	17	1
Total		50	50

Indiana House of Representatives

Party		Before	After	Change
	Republican	49	52	3
	Democratic	51	48	3
Total		100	100

Iowa

Main articles: 2004 Iowa Senate election and 2004 Iowa House of Representatives election

All of the seats of the Iowa House of Representatives and half of the Iowa Senate were up for election. Republicans maintained control of the House while the Senate became tied.

Iowa Senate

Party		Before	After	Change
	Republican	29	25	4
	Democratic	21	25	4
Total		50	50

Iowa House of Representatives

Party		Before	After	Change
	Republican	54	51	3
	Democratic	46	51	3
Total		100	100

Kansas

Main articles: 2004 Kansas Senate election and 2004 Kansas House of Representatives election

All of the seats of the Kansas Senate and Kansas House of Representatives were up for election. Republicans maintained control of both chambers.

Kansas Senate

Party		Before	After	Change
	Republican	30	30
	Democratic	10	10
Total		40	40

Kansas House of Representatives

Party		Before	After	Change
	Republican	80	83	3
	Democratic	45	42	3
Total		125	125

Kentucky

Main articles: 2004 Kentucky Senate election and 2004 Kentucky House of Representatives election

All of the seats of the Kentucky House of Representatives and half of the Kentucky Senate were up for election. Republicans maintained control of the Senate and Democrats maintained control of the House of Representatives.

Kentucky Senate

Party		Before	After	Change
	Republican	22	22 [f]
	Democratic	16	15	1
Total		38	37	1

Kentucky House of Representatives

Party		Before	After	Change
	Democratic	65	57	8
	Republican	35	43	8
Total		100	100

Maine

Main articles: 2004 Maine State Senate election and 2004 Maine House of Representatives election

All of the seats of the Maine Legislature were up for election. Democrats maintained control of both state legislative chambers.

Maine Senate

Party		Before	After	Change
	Democratic	18	18
	Republican	17	17
Total		35	35

Maine House of Representatives

Party		Before	After	Change
	Democratic	80	76	4
	Republican	67	73	6
	Independent	3	1	2
	Green	1	1
Total		151	151

Massachusetts

Main articles: 2004 Massachusetts Senate election and 2004 Massachusetts House of Representatives election

All of the seats of the Massachusetts Legislature were up for election. Democrats maintained control of both state legislative chambers.

Massachusetts Senate

Party		Before	After	Change
	Democratic	33	34	1
	Republican	7	6	1
Total		40	40

Massachusetts House of Representatives

Party		Before	After	Change
	Democratic	135	139	4
	Republican	23	20	3
	Independent	1	1
Total		160	160

Michigan

Main article: 2004 Michigan House of Representatives election

All of the seats of the Michigan House of Representatives were up for election. Republicans maintained control of the House.

Michigan House of Representatives

Party		Before	After	Change
	Republican	62	58	4
	Democratic	48	52	4
Total		110	110

Minnesota

Main article: 2004 Minnesota House of Representatives election

All of the seats of the Minnesota House of Representatives were up. Republicans maintained control of the House.

Minnesota House of Representatives

Party		Before	After	Change
	Republican	81	68	13
	Democratic (DFL)	53	66	13
Total		134	134

Missouri

Main articles: 2004 Missouri State Senate election and 2004 Missouri House of Representatives election

All of the seats of the Missouri House of Representatives and half of the Missouri Senate were up for election. Republicans maintained control of both state legislative chambers.

Missouri Senate

Party		Before	After	Change
	Republican	20	23	3
	Democratic	14	11	3
Total		34	34

Missouri House of Representatives

Party		Before	After	Change
	Republican	90	97	7
	Democratic	73	66	7
Total		163	163

Montana

Main articles: 2004 Montana Senate election and 2004 Montana House of Representatives election

All of the seats of the Montana House of Representatives and half of the Montana Senate were up for election. Democrats flipped control of both chambers.

Montana Senate

Party		Before	After	Change
	Democratic	21	27	6
	Republican	29	23	6
Total		50	50

Montana House of Representatives

Party		Before	After	Change
	Democratic	47	50 [g]	3
	Republican	53	50	3
Total		100	100

Nebraska

Main article: 2004 Nebraska State Legislature election

Nebraska is the only U.S. state with a unicameral legislature; half of the seats of the Nebraska Legislature were up for election. Nebraska is also unique in that its legislature is officially non-partisan and holds non-partisan elections, although the Democratic and Republican parties each endorse legislative candidates. Republicans maintained control.

Nebraska Legislature

Party		Before	After	Change
	Republican	34	32	2
	Democratic	13	15	2
	Independent	2	2
Total		49	49

Nevada

Main articles: 2004 Nevada State Senate election and 2004 Nevada Assembly election

All of the seats of the Nevada House of Representatives and half of the Nevada Senate were up for election. Democrats maintained control of the House while Republicans maintained control of the Senate.

Nevada Senate

Party		Before	After	Change
	Republican	13	12	1
	Democratic	8	9	1
Total		21	21

Nevada Assembly

Party		Before	After	Change
	Democratic	23	26	3
	Republican	19	16	3
Total		42	42

New Hampshire

Main articles: 2004 New Hampshire Senate election and 2004 New Hampshire House of Representatives election

All of the seats of the New Hampshire House of Representatives and the New Hampshire Senate were up for election. Republicans maintained control of both chambers.

New Hampshire Senate

Party		Before	After	Change
	Republican	18	16	2
	Democratic	6	8	2
Total		24	24

New Hampshire House of Representatives

Party		Before	After	Change
	Republican	278	249	29
	Democratic	122	151	29
Total		400	400

New Mexico

Main articles: 2004 New Mexico Senate election and 2004 New Mexico House of Representatives election

All of the seats of the New Mexico Legislature were up for election; Democrats maintained control of both chambers.

New Mexico Senate

Party		Before	After	Change
	Democratic	24	24
	Republican	18	18
Total		42	42

New Mexico House of Representatives

Party		Before	After	Change
	Democratic	43	42	1
	Republican	27	28	1
Total		70	70

New York

Main articles: 2004 New York State Senate election and 2004 New York State Assembly election

All of the seats of the New York Legislature were up for election. Republicans maintained control of the Senate while Democrats maintained control of the Assembly.

New York State Senate

Party		Before	After	Change
	Republican	37	35	2
	Democratic	25	27	2
Total		62	62

New York State Assembly

Party		Before	After	Change
	Democratic	102	104	2
	Republican	48	46	2
Total		150	150

North Carolina

Main articles: 2004 North Carolina Senate election and 2004 North Carolina House of Representatives election

All of the seats of the North Carolina House of Representatives and half of the North Carolina Senate were up for election. Democrats maintained control of the Senate and gained control of the House.

North Carolina Senate

Party		Before	After	Change
	Democratic	28	29	1
	Republican	22	21	1
Total		50	50

North Carolina House of Representatives

Party		Before	After	Change
	Democratic	59	63	4
	Republican	61	57	4
Total		120	120

North Dakota

Main articles: 2004 North Dakota Senate election and 2004 North Dakota House of Representatives election

All of the seats of the North Dakota House of Representatives and half of the North Dakota Senate were up for election. Republicans maintained control of both state legislative chambers.

North Dakota Senate

Party		Before	After	Change
	Republican	31	32	1
	Democratic-NPL	16	15	1
Total		47	47

North Dakota House of Representatives

Party		Before	After	Change
	Republican	66	67	1
	Democratic-NPL	28	27	1
Total		94	94

Ohio

Main articles: 2004 Ohio Senate election and 2004 Ohio House of Representatives election

All of the seats of the Ohio House of Representatives and half of the Ohio Senate were up for election. Republicans maintained control of both chambers.

Ohio Senate

Party		Before	After	Change
	Republican	22	22
	Democratic	11	11
Total		33	33

Ohio House of Representatives

Party		Before	After	Change
	Republican	62	61	1
	Democratic	37	38	1
Total		99	99

Oklahoma

Main articles: 2004 Oklahoma Senate election and 2004 Oklahoma House of Representatives election

All of the seats of the Oklahoma House of Representatives and half of the Oklahoma Senate were up for election. Democrats maintained control of the Senate while Republicans won control of the House.

Oklahoma Senate

Party		Before	After	Change
	Democratic	28	26	2
	Republican	20	22	2
Total		48	48

Oklahoma House of Representatives

Party		Before	After	Change
	Republican	48	57	9
	Democratic	53	44	9
Total		101	101

Oregon

Main articles: 2004 Oregon State Senate election and 2004 Oregon House of Representatives election

All of the seats of the Oregon House of Representatives and half of the Oregon Senate were up for election. Democrats won control of the Senate while Republicans maintained control of the House.

Oregon State Senate

Party		Before	After	Change
	Democratic	15	17	2
	Republican	15	13	2
Total		30	30

Oregon House of Representatives

Party		Before	After	Change
	Republican	35	33	2
	Democratic	25	27	2
Total		60	60

Pennsylvania

Main articles: 2004 Pennsylvania Senate election and 2004 Pennsylvania House of Representatives election

All of the seats of the Pennsylvania House of Representatives and half of the Pennsylvania Senate were up for election. Republicans maintained control of both chambers.

Pennsylvania State Senate

Party		Before	After	Change
	Republican	29	30	1
	Democratic	21	20	1
Total		50	50

Pennsylvania House of Representatives

Party		Before	After	Change
	Republican	109	110	1
	Democratic	94	93	1
Total		203	203

Rhode Island

Main articles: 2004 Rhode Island Senate election and 2004 Rhode Island House of Representatives election

All of the seats of the Rhode Island Legislature were up for election. Democrats maintained control of both state legislative chambers.

Rhode Island Senate

Party		Before	After	Change
	Democratic	32	33	1
	Republican	6	5	1
Total		38	38

Rhode Island House of Representatives

Party		Before	After	Change
	Democratic	63	59	4
	Republican	11	16	5
	Independent	1	0	1
Total		75	75

South Carolina

Main article: 2004 South Carolina House of Representatives election

All of the seats of the South Carolina Legislature were up for election. Republicans maintained control of both chambers.

South Carolina Senate

Party		Before	After	Change
	Republican	26	26
	Democratic	20	20
Total		46	46

South Carolina House of Representatives

Party		Before	After	Change
	Republican	73	74	1
	Democratic	51	50	1
Total		124	124

South Dakota

Main articles: 2004 South Dakota Senate election and 2004 South Dakota House of Representatives election

All of the seats of the South Dakota Legislature were up for election. Republicans maintained control of both state legislative chambers.

South Dakota Senate

Party		Before	After	Change
	Republican	26	25	1
	Democratic	9	10	1
Total		35	35

South Dakota House of Representatives

Party		Before	After	Change
	Republican	49	51	2
	Democratic	21	19	2
Total		70	70

Tennessee

Main articles: 2004 Tennessee Senate election and 2004 Tennessee House of Representatives election

All of the seats of the Tennessee House of Representatives and half of the Tennessee Senate were up for election. Republicans gained control of the Senate while Democrats maintained control of the House.

Tennessee Senate

Party		Before	After	Change
	Republican	15	17	2
	Democratic	18	16	2
Total		33	33

Tennessee House of Representatives

Party		Before	After	Change
	Democratic	54	53	1
	Republican	45	46	1
Total		99	99

Texas

Main articles: 2004 Texas Senate election and 2004 Texas House of Representatives election

All of the seats of the Texas House of Representatives and half of the Texas Senate were up for election. Republicans maintained control of both state legislative chambers.

Texas Senate

Party		Before	After	Change
	Republican	19	19
	Democratic	12	12
Total		31	31

Texas House of Representatives

Party		Before	After	Change
	Republican	88	87	1
	Democratic	62	63	1
Total		150	150

Utah

Main articles: 2004 Utah Senate election and 2004 Utah House of Representatives election

All of the seats of the Utah House of Representatives and half of the Utah Senate were up for election. Republicans maintained control of both state legislative chambers.

Utah State Senate

Party		Before	After	Change
	Republican	22	21	1
	Democratic	7	8	1
Total		29	29

Utah House of Representatives

Party		Before	After	Change
	Republican	56	56
	Democratic	19	19
Total		75	75

Vermont

Main articles: 2004 Vermont Senate election and 2004 Vermont House of Representatives election

All of the seats of the Vermont Legislature were up for election. Democrats maintained control of the Senate and won control of the House.

Vermont Senate

Party		Before	After	Change
	Democratic	19	21	2
	Republican	11	9	2
Total		30	30

Vermont House of Representatives

Party		Before	After	Change
	Democratic	69	83	14
	Republican	74	60	14
	Progressive	4	6	2
	Independent	3	1	2
Total		150	150

Washington

Main articles: 2004 Washington State Senate election and 2004 Washington House of Representatives election

All of the seats of the Washington House of Representatives and half of the Washington Senate were up for election. Democrats won control of the Senate and maintained control of the House.

Washington State Senate

Party		Before	After	Change
	Democratic	24	26	2
	Republican	25	23	2
Total		49	49

Washington House of Representatives

Party		Before	After	Change
	Democratic	52	55	3
	Republican	46	43	3
Total		98	98

West Virginia

Main articles: 2004 West Virginia Senate election and 2004 West Virginia House of Delegates election

All of the seats of the West Virginia House of Delegates and half of the West Virginia Senate were up for election. Democrats maintained control of both state legislative chambers.

West Virginia Senate

Party		Before	After	Change
	Democratic	24	21	3
	Republican	10	13	3
Total		34	34

West Virginia House of Delegates

Party		Before	After	Change
	Democratic	68	68
	Republican	32	32
Total		100	100

Wisconsin

Main articles: 2004 Wisconsin Senate election and 2004 Wisconsin State Assembly election

All of the seats of the Wisconsin Assembly and half of the Wisconsin Senate were up for election. Republicans maintained control of both chambers.

Wisconsin Senate

Party		Before	After	Change
	Republican	18	19	1
	Democratic	15	14	1
Total		33	33

Wisconsin State Assembly

Party		Before	After	Change
	Republican	58	60	2
	Democratic	41	39	2
Total		99	99

Wyoming

Main articles: 2004 Wyoming State Senate election and 2004 Wyoming House of Representatives election

All of the seats of the Wyoming House of Representatives and half of the Wyoming Senate were up for election. Republicans maintained control of both state legislative chambers.

Wyoming Senate

Party		Before	After	Change
	Republican	20	23	3
	Democratic	10	7	3
Total		30	30

Wyoming House of Representatives

Party		Before	After	Change
	Republican	45	46	1
	Democratic	15	14	1
Total		60	60

Territorial and federal district summaries

American Samoa

All of the seats of the American Samoa Senate and the American Samoa House of Representatives were up for election. Members of the Senate serve four-year terms, while members of the House of Representatives serve two-year terms. Gubernatorial and legislative elections are conducted on a nonpartisan basis in American Samoa.

Guam

All of the seats of the unicameral Legislature of Guam were up for election. All members of the legislature serve a two-year term. Democrats lost control of the legislature.

Guam Legislature

Party		Before	After	Change
	Democratic	9	6	3
	Republican	6	9	3
Total		15	15

Puerto Rico

All of the seats of the Senate of Puerto Rico and the House of Representatives of Puerto Rico are up for election. Members of the Senate and the House of Representatives both serve four-year terms. The New Progressive Party won control of both chambers.

Puerto Rico Senate

Party		Before	After	Change
	Popular Democratic	19	11	7
	New Progressive	8	15	7
	Puerto Rican Independence	1	1
Total		27	27

Puerto Rico House of Representatives

Party		Before	After	Change
	Popular Democratic	29	18	11
	New Progressive	21	32	11
	Puerto Rican Independence	1	1
Total		51	51

Washington, D.C.

The Council of the District of Columbia serves as the legislative branch of the federal district of Washington, D.C. Half of the council seats are up for election. Council members serve four-year terms. Democrats retained supermajority control of the council.

District of Columbia Council

Party		Before	After	Change
	Democratic	11	11
	Republican	1	1
	Independent	1	1
Total		13	13

Notes

1. The Oregon Senate and North Carolina House of Representatives were tied prior to the election. Thus, they are not included in this total.
2. The Iowa Senate became tied. Thus, it is not included in the final total.
3. The upper houses of Arkansas, Delaware, Florida, Hawaii, Illinois, Minnesota, New Jersey, and Texas use a 2-4-4 term length system.
4. These figures represent the seats of Nebraska's unicameral legislature.
5. Excludes representative Michael P. Decker's temporary stint as a Democrat which tied the chamber for much of the 2003–2004 legislative session.
6. One elected Republican's seat was declared vacant due to residency issues. ^[9]
7. The Democratic Party controlled the chamber by virtue of holding the governor's office.

References

1. "State legislative elections, 2004".
2. Prah, Pamela M. (November 15, 2007). "2004 elections set up year of legislative stalemate". stateline.org. Archived from the original on November 7, 2008. Retrieved 2024-08-12.
3. Madigan, Erin; Kelderman, Eric (November 5, 2004). "GOP Loses Ground in Statehouse Control". pew.org. Retrieved 2023-03-03.
4. Storey, Tim (2005). "2004 legislative elections". Spectrum: The Journal of State Government. 78 (1): 8 – via Gale Academic OneFile.
5. Robbins, Jim (2004-12-29). "Ruling Puts Democrats in Control in Montana". The New York Times. ISSN   0362-4331 . Retrieved 2023-03-03.
6. "2020 Legislative Races by State and Legislative Chamber". National Conference of State Legislatures.
7. Jacobson, Louis (July 9, 2004). "Handicapping the State Legislatures: A 50-State Preview". The Rothenberg Political Report: 7–10 – via Harvard Dataverse.
8. Jacobson, Louis (October 1, 2004). "Handicapping the State Legislatures: A 50-State Preview". The Rothenberg Political Report: 7–10 – via Harvard Dataverse.
9. "Democrats win two special elections in Louisville". The Lexington Herald-Leader . February 15, 2006. p. B6.