The 2018 United States state legislative elections were held on November 6, 2018, for 87 state legislative chambers in 46 states. Across the fifty states, approximately 56 percent of all upper house seats and 92 percent of all lower house seats were up for election. Additionally, six territorial chambers in four territories and the District 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.

Summary table 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. 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.

State Upper House Lower House Seats up Total % up Term Seats up Total % up TermAlabama353510041051051004Alaska102050440401002Arizona3030100260601002Arkansas1835512/41001001002California204050480801002 Colorado173549465651002 Connecticut363610021511511002 Delaware1021482/441411002 Florida2040502/41201201002 Georgia565610021801801002 Hawaii1225482/451511002 Idaho3535100270701002 Illinois3959662/41181181002 Indiana25505041001001002 Iowa25505041001001002 Kansas040041251251002 Kentucky19385041001001002 Louisiana03904010504 Maine353510021511511002 Maryland474710041411411004 Massachusetts404010021601601002 Michigan383810041101101002 Minnesota06702/41341341002 Mississippi05204012204 Missouri17345041631631002 Montana25505041001001002 Nebraska2449494 N/A (unicameral) Nevada112152442421002 New Hampshire242410024004001002 New Jersey04002/408002 New Mexico042100470701002 New York636310021501501002 North Carolina505010021201201002 North Dakota24475144794504 Ohio163352499991002 Oklahoma24485041011011002 Oregon153050460601002 Pennsylvania25505042032031002 Rhode Island3838100275751002 South Carolina046041241241002 South Dakota3535100270701002 Tennessee173352499991002 Texas1531482/41501501002 Utah142948475751002 Vermont303010021501501002 Virginia04004010002 Washington254949498981002 West Virginia17345041001001002 Wisconsin173352499991002 Wyoming153050460601002 Total1106197256N/A4958541192N/A

Electoral predictions News sources predicted Democrats would make significant gains in state legislative control, flipping multiple chambers and narrowing Republican majorities in many others.

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

StatePVIChamberLast electionGoverningDaily KosResultAlabama rowspan=2 SenateR 27–8 R 27–8House of RepresentativesR 72–33 R 77–28Alaska rowspan=2 SenateR 14–6 R 13–7House of RepresentativesCoal. 22–18 Lean Coal.Coal. 23–15–2Arizona rowspan=2 SenateR 17–13 R 17–13House of RepresentativesR 35–25 R 31–29Arkansas rowspan=2 SenateR 26–9 R 26–9House of RepresentativesR 73–27 R 76–24California rowspan=2 State SenateD 27–13 D 29–11State AssemblyD 55–25 D 61–18–1Colorado rowspan=2 SenateR 18–17 D 19–16House of RepresentativesD 37–28 D 41–24Connecticut rowspan=2 State Senate18–18 D 22–14House of RepresentativesD 80–71 D 97–54Delaware rowspan=2 SenateD 11–10 D 12–9House of RepresentativesD 25–16 D 26–15Florida rowspan=2 SenateR 25–15 R 23–17House of RepresentativesR 79–41 R 73–47Georgia rowspan=2 State SenateR 38–18 R 35–21House of RepresentativesR 118–62 R 105–75Hawaii rowspan=2 SenateD 25–0 D 24–1House of RepresentativesD 45–6 D 46–5Idaho rowspan=2 SenateR 29–6 R 28–7House of RepresentativesR 59–11 R 56–14Illinois rowspan=2 SenateD 37–22 D 40–19House of RepresentativesD 67–51 D 74–44Indiana rowspan=2 SenateR 41–9 R 40–10House of RepresentativesR 70–30 R 67–33Iowa rowspan=2 SenateR 29–20–1 R 32–18House of RepresentativesR 59–41 R 53–47 Kansas House of RepresentativesR 85–40 R 84–41Kentucky rowspan=2 SenateR 27–11 R 28–10House of RepresentativesR 64–36 R 61–39Maine rowspan=2 SenateR 18–17 D 21–14House of RepresentativesD 77–72–2 D 89–56–6Maryland rowspan=2 SenateD 33–14 D 32–15House of RepresentativesD 92–49 D 99–42Massachusetts rowspan=2 SenateD 34–6 D 34–6House of RepresentativesD 125–35 D 127–32–1Michigan rowspan="2" SenateR 27–11 R 22–16House of RepresentativesR 63–47 R 58–52 Minnesota House of RepresentativesR 77–57 D 75–59Missouri rowspan=2 SenateR 25–9 R 23–10House of RepresentativesR 117–46 R 116–47Montana rowspan=2 SenateR 32–18 R 30–20House of RepresentativesR 59–41 R 58–42Nevada rowspan=2 SenateD 11–10 D 13–8AssemblyD 27–15 D 29–13New Hampshire rowspan=2 SenateR 14–10 D 14–10House of RepresentativesR 227–173 D 234–166 New Mexico House of RepresentativesD 38–32 D 46–24New York rowspan=2 State SenateCoal. 39–24 D 40–23State AssemblyD 106–43–1 D 105–44–1North Carolina rowspan=2 SenateR 35–15 R 29–21House of RepresentativesR 74–46 R 65–55North Dakota rowspan=2 SenateR 38–9 R 37–10House of RepresentativesR 81–13 R 79–15Ohio rowspan=2 SenateR 24–9 R 24–9House of RepresentativesR 66–33 R 61–38Oklahoma rowspan=2 SenateR 42–6 R 38–9House of RepresentativesR 75–26 R 77–23Oregon rowspan=2 State SenateD 17–13 D 18–12House of RepresentativesD 35–25 D 38–22Pennsylvania rowspan=2 State SenateR 34–16 R 28–21–1House of RepresentativesR 121–82 R 110–93Rhode Island rowspan=2 SenateD 33–5 D 33–5House of RepresentativesD 64–10–1 D 66–9 South Carolina House of RepresentativesR 80–44 R 80–44South Dakota rowspan=2 SenateR 29–6 R 30–5House of RepresentativesR 60–10 R 59–11Tennessee rowspan=2 SenateR 28–5 R 27–5House of RepresentativesR 74–25 R 73–26Texas rowspan=2 SenateR 20–11 R 19–12House of RepresentativesR 95–55 R 83–67Utah rowspan=2 State SenateR 24–5 R 23–6House of RepresentativesR 62–13 R 59–16Vermont rowspan=2 SenateD 21–7–2 D 22–6–2House of RepresentativesD 85–53–7–7 D 95–43–7–5Washington rowspan=2 State SenateD 26–23 D 28–21House of RepresentativesD 50–48 D 57–41West Virginia rowspan=2 SenateR 22–12 R 20–14House of DelegatesR 63–37 R 59–41Wisconsin rowspan=2 SenateR 20–13 R 19–14State AssemblyR 64–35 R 63–34Wyoming rowspan=2 SenateR 27–3 R 27–3House of RepresentativesR 52–8 R 50–9–1

National results

+Lower house results by partyPartySeatsbeforeChambersbeforeSeatsafter+/-Chambersafter+/-Republican3,034 312,792 242 29 2Democratic2,348 172,594 246 19 2Independent 20 0 17 3 0 Progressive 7 0 7 0 Independence 1 0 1 0 Green 1 0 0 1 0 Total 5,411 49 5,411 — 49 —

+Upper house results by partyPartySeatsbeforeChambersbeforeSeatsafter+/-Chambersafter+/-Republican 1,153 36 1,091 62 32 4Democratic 811 13 877 66 18 5Independent 5 0 2 3 0 Progressive 2 0 2 0 Libertarian100 10 Total 1,972 50 1,972 — 50 —

Democrats flipped over 350 state legislative seats from the Republicans, 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. Six chambers—the Colorado Senate, New Hampshire House, New Hampshire Senate, Minnesota House, Maine Senate, and New York State Senate—flipped from Republican to Democratic control.NCSL State Vote, National Conference of State Legislatures. Additionally the Connecticut Senate went from being evenly divided to a Democratic majority. Democrats also broke Republican legislative supermajorities in North Carolina,Jim Morrill & Paul A. Specht, Blue waves in urban North Carolina help Democrats break GOP 'supermajorities', Charlotte Observer (November 7, 2018). Michigan, and Pennsylvania, and they gained a legislative supermajority in both houses of the California, Illinois, and Oregon legislatures.Connor Radnovich, Oregon Democrats secure supermajorities in both chambers of Oregon Legislature, Salem Statesman Journal (November 7, 2018).

Maps

State summaries

Alabama

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

Alabama Senate Party Before After Change Republican 26 27 1Independent 10 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

Alaska

Half of the seats of the Alaska Senate and all of the seats of the Alaska 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.

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 15 2 Independent 2 2 Republican 3 8 2 18 15 Total 40 40

Arizona

All of the seats of the Arizona Senate and the Arizona 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

Arkansas

Half of the seats of the Arkansas Senate and all of the seats of the Arkansas 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

California

Half of the seats of the California State Senate and all of the seats of the California 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

Colorado

Half of the seats of the Colorado Senate and all of the seats of the Colorado 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

Connecticut

All of the seats of the Connecticut State Senate and the Connecticut 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 1823 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

Delaware

Half of the seats of the Delaware Senate and all of the seats of the Delaware 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

Florida

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