2018 United States state legislative elections

← 2017 November 6, 2018 2019 →
87 legislative chambers 46 states
Majority party Minority party Third party   Party Republican Democratic Coalition Chambers before 67 30 1[b][c] Chambers after 61 37 1[b] Overall change 6 7[a]
Map of upper house elections:      Democrats gained control      Democrats retained control      Republicans retained control      Non-partisan legislature      No regularly-scheduled elections
Map of lower house elections:      Democrats gained control      Democrats retained control      Republicans retained control      Coalition retained control      Non-partisan legislature      No regularly-scheduled elections

The2018 United States state legislative elections were held on November 6, 2018, for 87 state legislative chambers in 46 states. Across thefifty states, approximately 56 percent of allupper house seats and 92 percent of alllower house seats were up for election. Additionally, six territorial chambers in four territories and theDistrict of Columbia were up as well.

Democrats made significant ground in state legislative races, flipping six chambers from the Republicans and winning control of one tied chamber.

Regularly scheduled elections were held in 87 of the 99 state legislative chambers in the United States; nationwide, regularly scheduled elections were held for 6,064 of the 7,383 legislative seats. Most 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.^[2] The chambers that were 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 election years.

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

News sources predicted Democrats would make significant gains in state legislative control, flipping multiple chambers and narrowing Republican majorities in many others.^[3]

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

Lower house results by party[5] Party Seats before[g] Chambers before Seats after +/- Chambers after +/- Republican 3034 31 2792 242 29 2 Democratic 2348 17 2594 246 19 2 Independent 20 0 17 3 0 Progressive 7 0 7 0 Independence 1 0 1 0 Green 1 0 0 1 0 Total 5411 49 5411 — 49 —

Upper house results by party[h][5] Party Seats before[i] Chambers before Seats after +/- Chambers after +/- Republican 1153 36 1091 62 32 4 Democratic 811 13 877 66 18 5 Independent 5 0 2 3 0 Progressive 2 0 2 0 Libertarian 1 0 0 1 0 Total 1972 50 1972 — 50 —

Democrats flipped over 350 state legislative seats from the Republicans,^[6] with Republican flips offsetting their to total net gain to just over 300 seats. Democrats picked up most of those seats in states where President Trump's approval rating was relatively low.^[7] Six chambers—theColorado Senate,New Hampshire House,New Hampshire Senate,Minnesota House,Maine Senate, andNew York State Senate—flipped from Republican to Democratic control.^[8] Additionally theConnecticut Senate went from being evenly divided to a Democratic majority.^[8] Democrats also broke Republican legislative supermajorities inNorth Carolina,^[9]Michigan, andPennsylvania,^[7] and they gained a legislative supermajority in both houses of theCalifornia,Illinois, andOregon legislatures.^[10][11]

• 
  Partisan control of states in the 2018 elections
  

    Democrats retained trifecta

    Democrats gained trifecta

    Republicans retained trifecta

    Republicans gained trifecta

    Divided government maintained

    Divided government established

    Officially non-partisan legislature
• 
  Upper house seats by party holding majority in each state
  

  Republican   50–60%   60–70%   70–80%   80–90%   90–100%

  Democratic   50–60%   60–70%   70–80%   80–90%   90–100%

• 
  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%   90–100%

• 
  Net changes to upper house seats after the 2018 elections
       +1 Dem seat     +2 Dem seats     +3–5 Dem seats     +6–8 Dem seats
       +1 Rep seat     +3 Rep seats
• 
  Net changes to lower house seats after the 2018 elections
       +1 Dem seat     +2 Dem seats     +3–5 Dem seats     +6–61 Dem seats
       +1 Rep seat     +2 Rep seats     +5 Rep seats
       +1 Ind seat

All members of theAlabama Senate and theAlabama House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Alabama Senate

Party		Before	After	Change
	Republican	26	27	1
	Independent	1	0	1
	Democratic	8	8
Total		35	35

Alabama House of Representatives

Party		Before	After	Change
	Republican	72	77	5
	Democratic	33	28	5
Total		105	105

Half of the seats of theAlaska Senate and all of the seats of theAlaska House of Representatives were up for election in 2018. Republicans retained control of the Senate, while a cross-partisan coalition of Democrats, Republicans, and independents retained control of the House of Representatives.^[12]

Alaska Senate

Party		Before	After	Change
	Republican	14	13	1
	Democratic	6	7	1
Total		20	20

Alaska House of Representatives

Party		Before	After	Change
	Democratic	17[j]	15[k]	2
	Independent	2	2
	Republican	3	8	2
		18	15
Total		40	40

All of the seats of theArizona Senate and theArizona House of Representatives were up for election in 2018. Republicans retained control of both chambers, but lost four seats in the House and lost the popular vote in the Senate by 1.4 points.

Arizona Senate

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

Arizona House of Representatives

Party		Before	After	Change
	Republican	35	31	4
	Democratic	25	29	4
Total		60	60

Half of the seats of theArkansas Senate and all of the seats of theArkansas House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Arkansas Senate

Party		Before	After	Change
	Republican	28	29	1
	Democratic	7	6	1
Total		35	35

Arkansas House of Representatives

Party		Before	After	Change
	Republican	77	82	5
	Democratic	23	18	5
Total		100	100

Half of the seats of theCalifornia State Senate and all of the seats of theCalifornia State Assembly were up for election in 2018. Democrats retained control of both chambers.

California State Senate

Party		Before	After	Change
	Democratic	26	29	3
	Republican	14	11	3
Total		40	40

California State Assembly

Party		Before	After	Change
	Democratic	55	60	5
	Republican	25	20	5
Total		80	80

Half of the seats of theColorado Senate and all of the seats of theColorado House of Representatives were up for election in 2018. Democrats won control of the Senate and retained control of the House of Representatives.

Colorado Senate

Party		Before	After	Change
	Democratic	17	19	2
	Republican	18	16	2
Total		35	35

Colorado House of Representatives

Party		Before	After	Change
	Democratic	37	42	5
	Republican	28	23	5
Total		65	65

All of the seats of theConnecticut State Senate and theConnecticut House of Representatives were up for election in 2018. Democrats won control of the Senate, which was previously tied and retained control of the House of Representatives.

Connecticut State Senate

Party		Before	After	Change
	Democratic	18	23	5
	Republican	18	13	5
Total		36	36

Connecticut House of Representatives

Party		Before	After	Change
	Democratic	80	92	12
	Republican	71	59	12
Total		151	151

Half of the seats of theDelaware Senate and all of the seats of theDelaware House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Delaware Senate

Party		Before	After	Change
	Democratic	11	12	1
	Republican	10	9	1
Total		21	21

Delaware House of Representatives

Party		Before	After	Change
	Democratic	25	26	1
	Republican	16	15	1
Total		41	41

Half of the seats of theFlorida Senate and all of the seats of theFlorida House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Florida Senate

Party		Before	After	Change
	Republican	24	23	1
	Democratic	16	17	1
Total		40	40

Florida House of Representatives

Party		Before	After	Change
	Republican	78	73	5
	Democratic	42	47	5
Total		120	120

All of the seats of theGeorgia State Senate and theGeorgia House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Georgia State Senate

Party		Before	After	Change
	Republican	37	35	2
	Democratic	19	21	2
Total		56	56

Georgia House of Representatives

Party		Before	After	Change
	Republican	116	105	11
	Democratic	64	75	11
Total		180	180

Half of the seats of theHawaii Senate and all of the seats of theHawaii House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Hawaii Senate

Party		Before	After	Change
	Democratic	25	24	1
	Republican	0	1	1
Total		25	25

Hawaii House of Representatives

Party		Before	After	Change
	Democratic	46	46
	Republican	5	5
Total		51	51

All of the seats of theIdaho Senate and theIdaho House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Idaho Senate

Party		Before	After	Change
	Republican	29	28	1
	Democratic	6	7	1
Total		35	35

Idaho House of Representatives

Party		Before	After	Change
	Republican	59	56	3
	Democratic	11	14	3
Total		70	70

Two-thirds of the seats of theIllinois Senate and all of the seats of theIllinois House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Illinois Senate

Party		Before	After	Change
	Democratic	37	40	3
	Republican	22	19	3
Total		59	59

Illinois House of Representatives

Party		Before	After	Change
	Democratic	67	74	7
	Republican	51	44	7
Total		118	118

Half of the seats of theIndiana Senate and all of the seats of theIndiana House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Indiana Senate

Party		Before	After	Change
	Republican	41	40	1
	Democratic	9	10	1
Total		50	50

Indiana House of Representatives

Party		Before	After	Change
	Republican	70	67	3
	Democratic	30	33	3
Total		100	100

Half of the seats of theIowa Senate and all of the seats of theIowa House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Iowa Senate

Party		Before	After	Change
	Republican	29	32	3
	Democratic	20	18	2
	Independent	1	0	1
Total		50	50

Iowa House of Representatives

Party		Before	After	Change
	Republican	59	53	6
	Democratic	41	47	6
Total		100	100

All of the seats of theKansas House of Representatives were up for election in 2018; the Republican-controlledKansas Senate did not hold regularly scheduled elections in 2018. Republicans retained control of the House of Representatives.

Kansas House of Representatives

Party		Before	After	Change
	Republican	85	85
	Democratic	40	40
Total		125	125

Half of the seats of theKentucky Senate and all of the seats of theKentucky House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Kentucky Senate

Party		Before	After	Change
	Republican	27	28	1
	Democratic	11	10	1
Total		38	38

Kentucky House of Representatives

Party		Before	After	Change
	Republican	63	61	2
	Democratic	37	39	2
Total		100	100

All of the seats of theMaine Senate and theMaine House of Representatives were up for election in 2018. Democrats gained control of the state senate and retained control of the House of Representatives.

Maine Senate

Party		Before	After	Change
	Democratic	17	21	4
	Republican	18	14	4
Total		35	35

Maine House of Representatives

Party		Before	After	Change
	Democratic	73	89	16
	Republican	70	57	13
	Independent	7	5	2
	Green	1	0	1
Total		151	151

All of the seats of theMaryland Senate and theMaryland House of Delegates were up for election in 2018. Democrats retained control of both chambers.

Maryland Senate

Party		Before	After	Change
	Democratic	33	32	1
	Republican	14	15	1
Total		47	47

Maryland House of Delegates

Party		Before	After	Change
	Democratic	92	99	7
	Republican	49	42	7
Total		141	141

All of the seats of theMassachusetts Senate and theMassachusetts House of Representatives were up for election in 2018. Democrats control both chambers, and the governor is a member of the Republican Party. Democrats hold a veto-proof supermajority in the state legislature.^[13]

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	125	127	2
	Republican	34	32	2
	Independent	1	1
Total		160	160

All of the seats of theMichigan Senate and theMichigan House of Representatives were up for election in 2018. Republicans retained control of both chambers, but Democrats picked up enough seats to break the Republican legislative supermajority.^[7]

Michigan Senate

Party		Before	After	Change
	Republican	27	22	5
	Democratic	11	16	5
Total		110	110

Michigan House of Representatives

Party		Before	After	Change
	Republican	63	58	5
	Democratic	47	52	5
Total		110	110

All of the seats of theMinnesota House of Representatives were up for election in 2018; the Republican-controlledMinnesota Senate did not hold regularly scheduled elections in 2018. Democrats won control of the House of Representatives, making Minnesota the only state in the country where each major party controlled one state legislative chamber.^[6]

Minnesota House of Representatives

Party		Before	After	Change
	Democratic (DFL)	57	75	18
	Republican	77	59	18
Total		134	134

Half of the seats of theMissouri Senate and all of the seats of theMissouri House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Missouri Senate

Party		Before	After	Change
	Republican	24	24
	Democratic	10	10
Total		34	34

Missouri House of Representatives

Party		Before	After	Change
	Republican	117	116	1
	Democratic	46	47	1
Total		163	163

Half of the seats of theMontana Senate and all of the seats of theMontana House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Montana Senate

Party		Before	After	Change
	Republican	32	30	2
	Democratic	18	20	2
Total		50	50

Montana House of Representatives

Party		Before	After	Change
	Republican	59	58	1
	Democratic	41	42	1
Total		100	100

Nebraska is the only U.S. state with aunicameral legislature; half of the seats of theNebraska Legislature were up for election in 2018. 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	31	30	1
	Democratic	16	18	2
	Independent	1	1
	Libertarian	1	0	1
Total		49	49

Half of the seats of theNevada Senate and all of the seats of theNevada Assembly were up for election in 2018. Democrats retained control of both chambers.

Nevada Senate

Party		Before	After	Change
	Democratic	11	13	2
	Independent	1	0	1
	Republican	9	8	1
Total		21	21

Nevada Assembly

Party		Before	After	Change
	Democratic	27	29	2
	Republican	15	13	2
Total		42	42

All of the seats of theNew Hampshire Senate and theNew Hampshire House of Representatives were up for election in 2018. Democrats won control of both chambers.

New Hampshire Senate

Party		Before	After	Change
	Democratic	10	14	4
	Republican	14	10	4
Total		24	24

New Hampshire House of Representatives

Party		Before	After	Change
	Democratic	173	234	61
	Republican	227	166	61
Total		400	400

All of the seats of theNew Mexico House of Representatives were up for election in 2018; the Democratic-controlledNew Mexico Senate did not hold regularly scheduled elections in 2018. Democrats retained control of the House of Representatives.

New Mexico House of Representatives

Party		Before	After	Change
	Democratic	39	46	7
	Republican	31	24	7
Total		70	70

All of the seats of theNew York State Senate and theNew York State Assembly were up for election in 2018. Democrats won control of the state senate and retained control of the state assembly.

New York State Senate

Party		Before	After	Change
	Democratic	31	39	8
		1[l]	1
	Republican	31	23	8
Total		63	63

New York State Assembly

Party		Before	After	Change
	Democratic	107	106	1
	Republican	42	43	1
	Independence	1	1
Total		150	150

All of the seats of theNorth Carolina Senate and theNorth Carolina House of Representatives were up for election in 2018. Republicans retained control of both chambers, but Democrats won enough seats to break the Republican legislative super-majority.^[9]

North Carolina Senate

Party		Before	After	Change
	Republican	35	29	6
	Democratic	15	21	6
Total		50	50

North Carolina House of Representatives

Party		Before	After	Change
	Republican	75	65	10
	Democratic	45	55	10
Total		120	120

Half of the seats of theNorth Dakota Senate and theNorth Dakota House of Representatives were up for election in 2018. Republicans retained control of both chambers.

North Dakota Senate

Party		Before	After	Change
	Republican	38	37	1
	Democratic-NPL	9	10	1
Total		47	47

North Dakota House of Representatives

Party		Before	After	Change
	Republican	81	79	2
	Democratic-NPL	13	15	2
Total		94	94

Half of the seats of theOhio Senate and all of the seats of theOhio House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Ohio Senate

Party		Before	After	Change
	Republican	24	24
	Democratic	9	9
Total		33	33

Ohio House of Representatives

Party		Before	After	Change
	Republican	66	61	5
	Democratic	33	38	5
Total		99	99

Half of the seats of theOklahoma Senate and all of the seats of theOklahoma House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Oklahoma Senate

Party		Before	After	Change
	Republican	42	39	3
	Democratic	6	9	3
Total		48	48

Oklahoma House of Representatives

Party		Before	After	Change
	Republican	75	77	2
	Democratic	26	24	2
Total		101	101

Half of the seats of theOregon State Senate and all of the seats of theOregon House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Oregon State Senate

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

Oregon House of Representatives

Party		Before	After	Change
	Democratic	35	38	3
	Republican	25	22	3
Total		50	50

Half of the seats of thePennsylvania State Senate and all of the seats of thePennsylvania House of Representatives were up for election in 2018. Republicans retained control of both chambers, but Democrats picked up enough seats to break the Republican legislative supermajority.^[7]

Pennsylvania State Senate

Party		Before	After	Change
	Republican	34	29	5
	Democratic	16	21	5
Total		50	50

Pennsylvania House of Representatives

Party		Before	After	Change
	Republican	121	110	11
	Democratic	82	93	11
Total		203	203

All of the seats of theRhode Island Senate and theRhode Island House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Rhode Island Senate

Party		Before	After	Change
	Democratic	33	33
	Republican	5	5
Total		38	38

Rhode Island House of Representatives

Party		Before	After	Change
	Democratic	64	66	2
	Republican	11	9	2
Total		75	75

All of the seats of theSouth Carolina House of Representatives were up for election in 2018; the Republican-controlledSouth Carolina Senate did not hold regularly scheduled elections in 2018. Republicans retained control of the House of Representatives.

South Carolina House of Representatives

Party		Before	After	Change
	Republican	80	80
	Democratic	44	44
Total		124	124

All of the seats of theSouth Dakota Senate and theSouth Dakota House of Representatives were up for election in 2018. Republicans retained control of both chambers.

South Dakota Senate

Party		Before	After	Change
	Republican	29	30	1
	Democratic	6	5	1
Total		35	35

South Dakota House of Representatives

Party		Before	After	Change
	Republican	60	59	1
	Democratic	10	11	1
Total		70	70

Half of the seats of theTennessee Senate and all of the seats of theTennessee House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Tennessee Senate

Party		Before	After	Change
	Republican	28	28
	Democratic	5	5
Total		33	33

Tennessee House of Representatives

Party		Before	After	Change
	Republican	74	73	1
	Democratic	25	26	1
Total		99	99

Half of the seats of theTexas Senate and all of the seats of theTexas House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Texas Senate

Party		Before	After	Change
	Republican	21	19	2
	Democratic	10	12	2
Total		31	31

Texas House of Representatives

Party		Before	After	Change
	Republican	95	83	12
	Democratic	55	67	12
Total		150	150

Half of the seats of theUtah State Senate and all of the seats of theUtah House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Utah State Senate

Party		Before	After	Change
	Republican	24	23	1
	Democratic	5	6	1
Total		29	29

Utah House of Representatives

Party		Before	After	Change
	Republican	62	59	3
	Democratic	13	16	3
Total		75	75

All of the seats of theVermont Senate and theVermont House of Representatives were up for election in 2018. Democrats retained control of both chambers.

Vermont Senate

Party		Before	After	Change
	Democratic	21	22	1
	Republican	7	6	1
	Progressive	2	2
Total		30	30

Vermont House of Representatives

Party		Before	After	Change
	Democratic	83	95	12
	Republican	53	43	10
	Progressive	7	7
	Independent	7	5	2
Total		150	150

Half of the seats of theWashington State Senate and all of the seats of theWashington House of Representatives were up for election in 2018. Democrats had previously flipped control of the Senate in a2017 special election.^[14] Democrats retained control of both chambers.

Washington State Senate

Party		Before	After	Change
	Democratic	25	28	3
		1[m]	1[m]	3
	Republican	23	20
Total		49	49

Washington House of Representatives

Party		Before	After	Change
	Democratic	50	57	7
	Republican	48	41	7
Total		98	98

Half of the seats of theWest Virginia Senate and all of the seats of theWest Virginia House of Delegates were up for election in 2018. Republicans retained control of both chambers.

West Virginia Senate

Party		Before	After	Change
	Republican	22	20	2
	Democratic	12	14	2
Total		34	34

West Virginia House of Delegates

Party		Before	After	Change
	Republican	64	57	7
	Democratic	36	43	7
Total		100	100

Half of the seats of theWisconsin State Senate and all of the seats of theWisconsin State Assembly were up for election in 2018. Republicans retained 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	64	63	1
	Democratic	35	36	1
Total		99	99

Half of the seats of theWyoming Senate and all of the seats of theWyoming House of Representatives were up for election in 2018. Republicans retained control of both chambers.

Wyoming Senate

Party		Before	After	Change
	Republican	27	27
	Democratic	3	3
Total		30	30

Wyoming House of Representatives

Party		Before	After	Change
	Republican	51	50	1
	Democratic	9	9
	Independent	0	1	1
Total		60	60

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

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

Guam Legislature

Party		Before	After	Change
	Democratic	9	10	1
	Republican	6	5	1
Total		15	15

A portion of the seats of theNorthern Mariana Islands Senate, and all of the seats of theNorthern Mariana Islands House of Representatives, were up for election. Members of the senate serve either four-year terms, while members of the house serve two-year terms. Republicans maintained control of both chambers.

Northern Mariana Islands Senate^[15]

Party		Before	After	Change
	Republican	7	6	1
	Independent	2	3	1
	Democratic	0	0
Total		9	9

Northern Mariana Islands House of Representatives^[16]

Party		Before	After	Change
	Republican	15	13	2
	Democratic	0	0
	Independent	5	7	2
Total		20	20

All of the seats of the unicameralLegislature of the Virgin Islands were up for election. All members of the legislature serve a two-year term. Democrats retained control of the legislature.

Virgin Islands Legislature

Party		Before	After	Change
	Democratic	11	13	2
	Independent	4	2	2
Total		15	15

TheCouncil of the District of Columbia serves as the legislative branch of thefederal district ofWashington, 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
	Independent	2	2
Total		13	13

Various states will hold special elections for legislative districts throughout the year.^[17]

• 2018 state legislature elections in the United States
• November 2018 in the United States
• State legislature elections in the United States by year

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