2018 United States state legislative elections

From Wikipedia, the free encyclopedia

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.

Quick facts 87 legislative chambers 46 states, Majority party ...
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[a][b]
Chambers after 61 37 1[a]
Overall change Decrease 6 Increase 7[c] Steady
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
Close

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.[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.

More information State, Upper House ...
State Upper House[2] Lower House[2]
Seats up Total % up Term Seats up Total % up Term
Alabama 35 35 100 4 105 105 100 4
Alaska 10 20 50 4 40 40 100 2
Arizona 30 30 100 2 60 60 100 2
Arkansas 18 35 51 2/4[d] 100 100 100 2
California 20 40 50 4 80 80 100 2
Colorado 17 35 49 4 65 65 100 2
Connecticut 36 36 100 2 151 151 100 2
Delaware 10 21 48 2/4[d] 41 41 100 2
Florida 20 40 50 2/4[d] 120 120 100 2
Georgia 56 56 100 2 180 180 100 2
Hawaii 12 25 48 2/4[d] 51 51 100 2
Idaho 35 35 100 2 70 70 100 2
Illinois 39 59 66 2/4[d] 118 118 100 2
Indiana 25 50 50 4 100 100 100 2
Iowa 25 50 50 4 100 100 100 2
Kansas 0 40 0 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 47 47 100 4 141 141 100 4
Massachusetts 40 40 100 2 160 160 100 2
Michigan 38 38 100 4 110 110 100 2
Minnesota 0 67 0 2/4[d] 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 24[e] 49[e] 49[e] 4 N/A (unicameral)
Nevada 11 21 52 4 42 42 100 2
New Hampshire 24 24 100 2 400 400 100 2
New Jersey 0 40 0 2/4[d] 0 80 0 2
New Mexico 0 42 100 4 70 70 100 2
New York 63 63 100 2 150 150 100 2
North Carolina 50 50 100 2 120 120 100 2
North Dakota 24 47 51 4 47 94 50 4
Ohio 16 33 52 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 0 46 0 4 124 124 100 2
South Dakota 35 35 100 2 70 70 100 2
Tennessee 17 33 52 4 99 99 100 2
Texas 15 31 48 2/4[d] 150 150 100 2
Utah 14 29 48 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 49 4 98 98 100 2
West Virginia 17 34 50 4 100 100 100 2
Wisconsin 17 33 52 4 99 99 100 2
Wyoming 15 30 50 4 60 60 100 2
Total 1106 1972 56 N/A 4958 5411 92 N/A
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Electoral predictions

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
More information State, PVI ...
State PVI Chamber Last

election

 Governing

Oct. 8, 2018[3]

 Daily Kos

Oct. 11, 2018[4]

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

More information Party, Seats before ...
Close

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—the Colorado Senate, New Hampshire House, New Hampshire Senate, Minnesota House, Maine Senate, and New York State Senate—flipped from Republican to Democratic control.[8] Additionally the Connecticut Senate went from being evenly divided to a Democratic majority.[8] Democrats also broke Republican legislative supermajorities in North Carolina,[9] Michigan, and Pennsylvania,[7] and they gained a legislative supermajority in both houses of the California, Illinois, and Oregon legislatures.[10][11]

Maps

  • 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
    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% 
    Upper house seats by party holding majority in each state
  • Lower 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
  • 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 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
    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

State summaries

Alabama

Main articles: 2018 Alabama Senate election and 2018 Alabama House of Representatives election
2018 Alabama House of Representatives elections

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

More information Party, Before ...
Alabama Senate
Party Before After Change
Republican 26 27 Increase 1
Independent 1 0 Decrease 1
Democratic 8 8 Steady
Total 35 35
Close
More information Party, Before ...
Alabama House of Representatives
Party Before After Change
Republican 72 77 Increase 5
Democratic 33 28 Decrease 5
Total 105 105
Close

Alaska

Main articles: 2018 Alaska Senate election and 2018 Alaska House of Representatives election
2018 Alaska House of Representatives elections

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.[12]

More information Party, Before ...
Alaska Senate
Party Before After Change
Republican 14 13 Decrease 1
Democratic 6 7 Increase 1
Total 20 20
Close
More information Party, Before ...
Alaska House of Representatives
Party Before After Change
Democratic 17[i] 15[j] Decrease 2
Independent 2 2 Steady
Republican 3 8 Increase 2
18 15
Total 40 40
Close

Arizona

Main articles: 2018 Arizona Senate election and 2018 Arizona State House of Representatives election
2018 Arizona House of Representatives elections

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.

More information Party, Before ...
Arizona Senate
Party Before After Change
Republican 17 17 Steady
Democratic 13 13 Steady
Total 30 30
Close
More information Party, Before ...
Arizona House of Representatives
Party Before After Change
Republican 35 31 Decrease 4
Democratic 25 29 Increase 4
Total 60 60
Close

Arkansas

Main articles: 2018 Arkansas Senate election and 2018 Arkansas House of Representatives election
2018 Arkansas House of Representatives elections

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.

More information Party, Before ...
Arkansas Senate
Party Before After Change
Republican 28 29 Increase 1
Democratic 7 6 Decrease 1
Total 35 35
Close
More information Party, Before ...
Arkansas House of Representatives
Party Before After Change
Republican 77 82 Increase 5
Democratic 23 18 Decrease 5
Total 100 100
Close

California

Main articles: 2018 California State Senate election and 2018 California State Assembly election
2018 California Assembly elections

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.

More information Party, Before ...
California State Senate
Party Before After Change
Democratic 26 29 Increase 3
Republican 14 11 Decrease 3
Total 40 40
Close
More information Party, Before ...
California State Assembly
Party Before After Change
Democratic 55 60 Increase 5
Republican 25 20 Decrease 5
Total 80 80
Close

Colorado

Main articles: 2018 Colorado State Senate election and 2018 Colorado House of Representatives election
2018 Colorado House of Representatives elections

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.

More information Party, Before ...
Colorado Senate
Party Before After Change
Democratic 17 19 Increase 2
Republican 18 16 Decrease 2
Total 35 35
Close
More information Party, Before ...
Colorado House of Representatives
Party Before After Change
Democratic 37 42 Increase 5
Republican 28 23 Decrease 5
Total 65 65
Close

Connecticut

Main articles: 2018 Connecticut State Senate election and 2018 Connecticut House of Representatives election
2018 Connecticut House of Representatives elections

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.

More information Party, Before ...
Connecticut State Senate
Party Before After Change
Democratic 18 23 Increase 5
Republican 18 13 Decrease 5
Total 36 36
Close
More information Party, Before ...
Connecticut House of Representatives
Party Before After Change
Democratic 80 92 Increase 12
Republican 71 59 Decrease 12
Total 151 151
Close

Delaware

Main articles: 2018 Delaware State Senate election and 2018 Delaware House of Representatives election
2018 Delaware House of Representatives elections

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.

More information Party, Before ...
Delaware Senate
Party Before After Change
Democratic 11 12 Increase 1
Republican 10 9 Decrease 1
Total 21 21
Close
More information Party, Before ...
Delaware House of Representatives
Party Before After Change
Democratic 25 26 Increase 1
Republican 16 15 Decrease 1
Total 41 41
Close

Florida

Main articles: 2018 Florida Senate election and 2018 Florida House of Representatives election
2018 Florida House of Representatives elections

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.

More information Party, Before ...
Florida Senate
Party Before After Change
Republican 24 23 Decrease 1
Democratic 16 17 Increase 1
Total 40 40
Close
More information Party, Before ...
Florida House of Representatives
Party Before After Change
Republican 78 73 Decrease 5
Democratic 42 47 Increase 5
Total 120 120
Close

Georgia

Main articles: 2018 Georgia State Senate election and 2018 Georgia House of Representatives election
2018 Georgia House of Representatives elections

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

More information Party, Before ...
Georgia State Senate
Party Before After Change
Republican 37 35 Decrease 2
Democratic 19 21 Increase 2
Total 56 56
Close
More information Party, Before ...
Georgia House of Representatives
Party Before After Change
Republican 116 105 Decrease 11
Democratic 64 75 Increase 11
Total 180 180
Close

Hawaii

Main articles: 2018 Hawaii Senate election and 2018 Hawaii House of Representatives election
2018 Hawaii House of Representatives elections

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

More information Party, Before ...
Hawaii Senate
Party Before After Change
Democratic 25 24 Decrease 1
Republican 0 1 Increase 1
Total 25 25
Close
More information Party, Before ...
Hawaii House of Representatives
Party Before After Change
Democratic 46 46 Steady
Republican 5 5 Steady
Total 51 51
Close

Idaho

Main articles: 2018 Idaho House of Representatives election and 2018 Idaho Senate election
2018 Idaho House of Representatives elections

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

More information Party, Before ...
Idaho Senate
Party Before After Change
Republican 29 28 Decrease 1
Democratic 6 7 Increase 1
Total 35 35
Close
More information Party, Before ...
Idaho House of Representatives
Party Before After Change
Republican 59 56 Decrease 3
Democratic 11 14 Increase 3
Total 70 70
Close

Illinois

Main articles: 2018 Illinois Senate election and 2018 Illinois House of Representatives election
2018 Illinois House of Representatives elections

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

More information Party, Before ...
Illinois Senate
Party Before After Change
Democratic 37 40 Increase 3
Republican 22 19 Decrease 3
Total 59 59
Close
More information Party, Before ...
Illinois House of Representatives
Party Before After Change
Democratic 67 74 Increase 7
Republican 51 44 Decrease 7
Total 118 118
Close

Indiana

Main articles: 2018 Indiana State Senate election and 2018 Indiana House of Representatives election
2018 Indiana House of Representatives elections

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

More information Party, Before ...
Indiana Senate
Party Before After Change
Republican 41 40 Decrease 1
Democratic 9 10 Increase 1
Total 50 50
Close
More information Party, Before ...
Indiana House of Representatives
Party Before After Change
Republican 70 67 Decrease 3
Democratic 30 33 Increase 3
Total 100 100
Close

Iowa

Main articles: 2018 Iowa Senate election and 2018 Iowa House of Representatives election
2018 Iowa House of Representatives elections

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

More information Party, Before ...
Iowa Senate
Party Before After Change
Republican 29 32 Increase 3
Democratic 20 18 Decrease 2
Independent 1 0 Decrease 1
Total 50 50
Close
More information Party, Before ...
Iowa House of Representatives
Party Before After Change
Republican 59 53 Decrease 6
Democratic 41 47 Increase 6
Total 100 100
Close

Kansas

Main article: 2018 Kansas House of Representatives election
2018 Kansas House of Representatives elections

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

More information Party, Before ...
Kansas House of Representatives
Party Before After Change
Republican 85 85 Steady
Democratic 40 40 Steady
Total 125 125
Close

Kentucky

Main articles: 2018 Kentucky Senate election and 2018 Kentucky House of Representatives election
2018 Kentucky House of Representatives elections

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

More information Party, Before ...
Kentucky Senate
Party Before After Change
Republican 27 28 Increase 1
Democratic 11 10 Decrease 1
Total 38 38
Close
More information Party, Before ...
Kentucky House of Representatives
Party Before After Change
Republican 63 61 Decrease 2
Democratic 37 39 Increase 2
Total 100 100
Close

Maine

Main articles: 2018 Maine State Senate election and 2018 Maine House of Representatives election
2018 Maine House of Representatives elections

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

More information Party, Before ...
Maine Senate
Party Before After Change
Democratic 17 21 Increase 4
Republican 18 14 Decrease 4
Total 35 35
Close
More information Party, Before ...
Maine House of Representatives
Party Before After Change
Democratic 73 89 Increase 16
Republican 70 57 Decrease 13
Independent 7 5 Decrease 2
Green 1 0 Decrease 1
Total 151 151
Close

Maryland

Main articles: 2018 Maryland Senate election and 2018 Maryland House of Delegates election
2018 Maryland House of Delegates elections

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

More information Party, Before ...
Maryland Senate
Party Before After Change
Democratic 33 32 Decrease 1
Republican 14 15 Increase 1
Total 47 47
Close
More information Party, Before ...
Maryland House of Delegates
Party Before After Change
Democratic 92 99 Increase 7
Republican 49 42 Decrease 7
Total 141 141
Close

Massachusetts

Main articles: 2018 Massachusetts Senate election and 2018 Massachusetts House of Representatives election
2018 Massachusetts House of Representatives elections

All of the seats of the Massachusetts Senate and the Massachusetts 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]

More information Party, Before ...
Massachusetts Senate
Party Before After Change
Democratic 33 34 Increase 1
Republican 7 6 Decrease 1
Total 40 40
Close
More information Party, Before ...
Massachusetts House of Representatives
Party Before After Change
Democratic 125 127 Increase 2
Republican 34 32 Decrease 2
Independent 1 1 Steady
Total 160 160
Close

Michigan

Main articles: 2018 Michigan Senate election and 2018 Michigan House of Representatives election
2018 Michigan House of Representatives elections

All of the seats of the Michigan Senate and the Michigan 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]

More information Party, Before ...
Michigan Senate
Party Before After Change
Republican 27 22 Decrease 5
Democratic 11 16 Increase 5
Total 110 110
Close
More information Party, Before ...
Michigan House of Representatives
Party Before After Change
Republican 63 58 Decrease 5
Democratic 47 52 Increase 5
Total 110 110
Close

Minnesota

Main article: 2018 Minnesota House of Representatives election
2018 Minnesota House of Representatives elections

All of the seats of the Minnesota House of Representatives were up for election in 2018; the Republican-controlled Minnesota 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]

More information Party, Before ...
Minnesota House of Representatives
Party Before After Change
Democratic (DFL) 57 75 Increase 18
Republican 77 59 Decrease 18
Total 134 134
Close

Missouri

Main articles: 2018 Missouri Senate election and 2018 Missouri House of Representatives election
2018 Missouri House of Representatives elections

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

More information Party, Before ...
Missouri Senate
Party Before After Change
Republican 24 24 Steady
Democratic 10 10 Steady
Total 34 34
Close
More information Party, Before ...
Missouri House of Representatives
Party Before After Change
Republican 117 116 Decrease 1
Democratic 46 47 Increase 1
Total 163 163
Close

Montana

Main articles: 2018 Montana House of Representatives election and 2018 Montana Senate election
2018 Montana House of Representatives elections

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

More information Party, Before ...
Montana Senate
Party Before After Change
Republican 32 30 Decrease 2
Democratic 18 20 Increase 2
Total 50 50
Close
More information Party, Before ...
Montana House of Representatives
Party Before After Change
Republican 59 58 Decrease 1
Democratic 41 42 Increase 1
Total 100 100
Close

Nebraska

Main article: 2018 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 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.

More information Party, Before ...
Nebraska Legislature
Party Before After Change
Republican 31 30 Decrease 1
Democratic 16 18 Increase 2
Independent 1 1 Steady
Libertarian 1 0 Decrease 1
Total 49 49
Close

Nevada

Main articles: 2018 Nevada State Senate election and 2018 Nevada House of Representatives election
2018 Nevada Assembly elections

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

More information Party, Before ...
Nevada Senate
Party Before After Change
Democratic 11 13 Increase 2
Independent 1 0 Decrease 1
Republican 9 8 Decrease 1
Total 21 21
Close
More information Party, Before ...
Nevada Assembly
Party Before After Change
Democratic 27 29 Increase 2
Republican 15 13 Decrease 2
Total 42 42
Close

New Hampshire

Main articles: 2018 New Hampshire Senate election and 2018 New Hampshire House of Representatives election
2018 New Hampshire House of Representatives elections

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

More information Party, Before ...
New Hampshire Senate
Party Before After Change
Democratic 10 14 Increase 4
Republican 14 10 Decrease 4
Total 24 24
Close
More information Party, Before ...
New Hampshire House of Representatives
Party Before After Change
Democratic 173 234 Increase 61
Republican 227 166 Decrease 61
Total 400 400
Close

New Mexico

Main article: 2018 New Mexico House of Representatives election
2018 New Mexico House of Representatives elections

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

More information Party, Before ...
New Mexico House of Representatives
Party Before After Change
Democratic 39 46 Increase 7
Republican 31 24 Decrease 7
Total 70 70
Close

New York

Main articles: 2018 New York State Senate election and 2018 New York State Assembly election
2018 New York State Assembly elections

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

More information Party, Before ...
New York State Senate
Party Before After Change
Democratic 31 39 Increase 8
1[k] 1 Steady
Republican 31 23 Decrease 8
Total 63 63
Close
More information Party, Before ...
New York State Assembly
Party Before After Change
Democratic 107 106 Decrease 1
Republican 42 43 Increase 1
Independence 1 1 Steady
Total 150 150
Close

North Carolina

Main articles: 2018 North Carolina Senate election and 2018 North Carolina House of Representatives election
2018 North Carolina House of Representatives elections

All of the seats of the North Carolina Senate and the North 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]

More information Party, Before ...
North Carolina Senate
Party Before After Change
Republican 35 29 Decrease 6
Democratic 15 21 Increase 6
Total 50 50
Close
More information Party, Before ...
North Carolina House of Representatives
Party Before After Change
Republican 75 65 Decrease 10
Democratic 45 55 Increase 10
Total 120 120
Close

North Dakota

Main articles: 2018 North Dakota Senate election and 2018 North Dakota House of Representatives election
2018 North Dakota House of Representatives elections

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

More information Party, Before ...
North Dakota Senate
Party Before After Change
Republican 38 37 Decrease 1
Democratic-NPL 9 10 Increase 1
Total 47 47
Close
More information Party, Before ...
North Dakota House of Representatives
Party Before After Change
Republican 81 79 Decrease 2
Democratic-NPL 13 15 Increase 2
Total 94 94
Close

Ohio

Main articles: 2018 Ohio Senate election and 2018 Ohio House of Representatives election
2018 Ohio House of Representatives elections

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

More information Party, Before ...
Ohio Senate
Party Before After Change
Republican 24 24 Steady
Democratic 9 9 Steady
Total 33 33
Close
More information Party, Before ...
Ohio House of Representatives
Party Before After Change
Republican 66 61 Decrease 5
Democratic 33 38 Increase 5
Total 99 99
Close

Oklahoma

Main articles: 2018 Oklahoma Senate election and 2018 Oklahoma House of Representatives election
2018 Oklahoma House of Representatives elections

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

More information Party, Before ...
Oklahoma Senate
Party Before After Change
Republican 42 39 Decrease 3
Democratic 6 9 Increase 3
Total 48 48
Close
More information Party, Before ...
Oklahoma House of Representatives
Party Before After Change
Republican 75 77 Increase 2
Democratic 26 24 Decrease 2
Total 101 101
Close

Oregon

Main article: 2018 Oregon legislative election
2018 Oregon House of Representatives elections

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

More information Party, Before ...
Oregon State Senate
Party Before After Change
Democratic 17 18 Increase 1
Republican 13 12 Decrease 1
Total 30 30
Close
More information Party, Before ...
Oregon House of Representatives
Party Before After Change
Democratic 35 38 Increase 3
Republican 25 22 Decrease 3
Total 50 50
Close

Pennsylvania

Main articles: 2018 Pennsylvania Senate election and 2018 Pennsylvania House of Representatives election
2018 Pennsylvania upper house elections
2018 Pennsylvania House of Representatives elections

Half of the seats of the Pennsylvania State Senate and all of the seats of the Pennsylvania 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]

More information Party, Before ...
Pennsylvania State Senate
Party Before After Change
Republican 34 29 Decrease 5
Democratic 16 21 Increase 5
Total 50 50
Close
More information Party, Before ...
Pennsylvania House of Representatives
Party Before After Change
Republican 121 110 Decrease 11
Democratic 82 93 Increase 11
Total 203 203
Close

Rhode Island

Main articles: 2018 Rhode Island Senate election and 2018 Rhode Island House of Representatives election
2018 Rhode Island House of Representatives elections

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

More information Party, Before ...
Rhode Island Senate
Party Before After Change
Democratic 33 33 Steady
Republican 5 5 Steady
Total 38 38
Close
More information Party, Before ...
Rhode Island House of Representatives
Party Before After Change
Democratic 64 66 Increase 2
Republican 11 9 Decrease 2
Total 75 75
Close

South Carolina

Main article: 2018 South Carolina House of Representatives election
2018 South Carolina House of Representatives elections

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

More information Party, Before ...
South Carolina House of Representatives
Party Before After Change
Republican 80 80 Steady
Democratic 44 44 Steady
Total 124 124
Close

South Dakota

Main articles: 2018 South Dakota Senate election and 2018 South Dakota House of Representatives election
2018 South Dakota House of Representatives elections

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

More information Party, Before ...
South Dakota Senate
Party Before After Change
Republican 29 30 Increase 1
Democratic 6 5 Decrease 1
Total 35 35
Close
More information Party, Before ...
South Dakota House of Representatives
Party Before After Change
Republican 60 59 Decrease 1
Democratic 10 11 Increase 1
Total 70 70
Close

Tennessee

Main articles: 2018 Tennessee State Senate election and 2018 Tennessee House of Representatives election
2018 Tennessee House of Representatives elections

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

More information Party, Before ...
Tennessee Senate
Party Before After Change
Republican 28 28 Steady
Democratic 5 5 Steady
Total 33 33
Close
More information Party, Before ...
Tennessee House of Representatives
Party Before After Change
Republican 74 73 Decrease 1
Democratic 25 26 Increase 1
Total 99 99
Close

Texas

Main articles: 2018 Texas Senate election and 2018 Texas House of Representatives election
2018 Texas House of Representatives elections

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

More information Party, Before ...
Texas Senate
Party Before After Change
Republican 21 19 Decrease 2
Democratic 10 12 Increase 2
Total 31 31
Close
More information Party, Before ...
Texas House of Representatives
Party Before After Change
Republican 95 83 Decrease 12
Democratic 55 67 Increase 12
Total 150 150
Close

Utah

Main articles: 2018 Utah Senate election and 2018 Utah House of Representatives election
2018 Utah House of Representatives elections

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

More information Party, Before ...
Utah State Senate
Party Before After Change
Republican 24 23 Decrease 1
Democratic 5 6 Increase 1
Total 29 29
Close
More information Party, Before ...
Utah House of Representatives
Party Before After Change
Republican 62 59 Decrease 3
Democratic 13 16 Increase 3
Total 75 75
Close

Vermont

Main articles: 2018 Vermont Senate election and 2018 Vermont House of Representatives election
2018 Vermont House of Representatives elections

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

More information Party, Before ...
Vermont Senate
Party Before After Change
Democratic 21 22 Increase 1
Republican 7 6 Decrease 1
Progressive 2 2 Steady
Total 30 30
Close
More information Party, Before ...
Vermont House of Representatives
Party Before After Change
Democratic 83 95 Increase 12
Republican 53 43 Decrease 10
Progressive 7 7 Steady
Independent 7 5 Decrease 2
Total 150 150
Close

Washington

Main articles: 2018 Washington State Senate election and 2018 Washington House of Representatives election
2018 Washington House of Representatives elections

Half of the seats of the Washington State Senate and all of the seats of the Washington House of Representatives were up for election in 2018. Democrats had previously flipped control of the Senate in a 2017 special election.[14] Democrats retained control of both chambers.

More information Party, Before ...
Washington State Senate
Party Before After Change
Democratic 25 28 Increase 3
1[l] 1[l] Decrease 3
Republican 23 20
Total 49 49
Close
More information Party, Before ...
Washington House of Representatives
Party Before After Change
Democratic 50 57 Increase 7
Republican 48 41 Decrease 7
Total 98 98
Close

West Virginia

Main articles: 2018 West Virginia Senate election and 2018 West Virginia House of Delegates election
2018 West Virginia House of Delegates elections

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

More information Party, Before ...
West Virginia Senate
Party Before After Change
Republican 22 20 Decrease 2
Democratic 12 14 Increase 2
Total 34 34
Close
More information Party, Before ...
West Virginia House of Delegates
Party Before After Change
Republican 64 57 Decrease 7
Democratic 36 43 Increase 7
Total 100 100
Close

Wisconsin

Main articles: 2018 Wisconsin State Senate election and 2018 Wisconsin State Assembly election
2018 Wisconsin State Assembly elections

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

More information Party, Before ...
Wisconsin Senate
Party Before After Change
Republican 18 19 Increase 1
Democratic 15 14 Decrease 1
Total 33 33
Close
More information Party, Before ...
Wisconsin State Assembly
Party Before After Change
Republican 64 63 Decrease 1
Democratic 35 36 Increase 1
Total 99 99
Close

Wyoming

Main articles: 2018 Wyoming Senate election and 2018 Wyoming House of Representatives election
2018 Wyoming House of Representatives elections

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

More information Party, Before ...
Wyoming Senate
Party Before After Change
Republican 27 27 Steady
Democratic 3 3 Steady
Total 30 30
Close
More information Party, Before ...
Wyoming House of Representatives
Party Before After Change
Republican 51 50 Decrease 1
Democratic 9 9 Steady
Independent 0 1 Increase 1
Total 60 60
Close

Territorial and federal district summaries

American Samoa

Main article: 2018 American Samoan general election

All of the seats of the American 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.

Guam

Main article: 2018 Guamanian legislative election

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 retained control of the legislature.

More information Party, Before ...
Guam Legislature
Party Before After Change
Democratic 9 10 Increase 1
Republican 6 5 Decrease 1
Total 15 15
Close

Northern Mariana Islands

Main article: 2018 Northern Mariana Islands general election

A portion of the seats of the Northern Mariana Islands Senate, and all of the seats of the Northern 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.

More information Party, Before ...
Northern Mariana Islands Senate[15]
Party Before After Change
Republican 7 6 Decrease 1
Independent 2 3 Increase 1
Democratic 0 0 Steady
Total 9 9
Close
More information Party, Before ...
Northern Mariana Islands House of Representatives[16]
Party Before After Change
Republican 15 13 Decrease 2
Democratic 0 0 Steady
Independent 5 7 Increase 2
Total 20 20
Close

U.S. Virgin Islands

Main article: 2018 United States Virgin Islands general election

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

More information Party, Before ...
Virgin Islands Legislature
Party Before After Change
Democratic 11 13 Increase 2
Independent 4 2 Decrease 2
Total 15 15
Close

Washington, D.C.

Main article: 2018 Council of the District of Columbia election
Council results

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.

More information Party, Before ...
District of Columbia Council
Party Before After Change
Democratic 11 11 Steady
Independent 2 2 Steady
Total 13 13
Close

Special elections

Various states held special elections for legislative districts throughout the year.[17]

Alabama

More information District, Incumbent ...
District Incumbent This race
Chamber No. Representative Party First
elected		 Results Candidates
House 21 Jim Patterson Republican 2010 Incumbent died October 2, 2017, of heart attack.
New member elected March 27, 2018.
Republican hold.
  • ▌ Green tickY Rex Reynolds (Republican) 52.8%
  • ▌ C. Terry Jones (Democratic) 47.1%
House 4 Micky Hammon Republican 2002 Incumbent resigned September 11, 2017.
New member elected May 15, 2018.
Republican hold.
  • ▌ Green tickY Parker Moore (Republican) 65.0%
  • Jo Ann Cummings (Democratic) 25.4%
  • Pete Wills (Independent) 9.5%
Senate 26 Quinton T. Ross, Jr. Democratic 2002 Incumbent resigned October 2, 2017, to become the president of Alabama State University
New member elected May 15, 2018.
Democratic hold.
  • ▌ Green tickY David Burkette (Democratic) 89.3%
  • ▌ D.J. Johnson(Republican) 10.4%
Close

New Jersey

More information District, Incumbent ...
District Incumbent This race
Chamber No. Representative Party First
elected		 Results Candidates[18][19]
Senate 38 Robert M. Gordon Democratic 2007 Incumbent resigned April 4, 2018, to join the New Jersey Board of Public Utilities.[20]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Joseph Lagana (Democratic) 60.1%
  • ▌ Daisy Ortiz Berger (Republican) 39.9%
Assembly 5 Arthur Barclay Democratic 2015 Incumbent resigned June 18, 2018, following arrest for assault.[21]
New member elected November 6, 2018.
Democratic hold.
Assembly 15 Elizabeth Maher Muoio Democratic 2015
(appointed)		 Incumbent resigned January 15, 2018, to become State Treasurer of New Jersey.[22]
New member elected November 6, 2018.
Democratic hold.
Assembly 15 Reed Gusciora Democratic 1995 Incumbent resigned June 30, 2018, to become Mayor of Trenton.[23]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Anthony Verrelli (Democratic) 71.5%
  • ▌ Justin Tibbetts (Republican) 25.5%
  • ▌ Alex Bethea (Integrity Transparency Accountability) 3.0%
Assembly 22 Jerry Green Democratic 1991 Incumbent died April 18, 2018, from a long illness.[24]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Linda S. Carter (Democratic) 69.4%
  • ▌ John Quattrocchi (Republican) 30.6%
Assembly 32 Vincent Prieto Democratic 2004
(appointed)		 Incumbent resigned February 26, 2018, to become President and CEO of the New Jersey Sports and Exposition Authority.[25]
New member elected November 6, 2018.
Democratic hold.
Assembly 34 Sheila Oliver Democratic 2003 Incumbent resigned January 9, 2018, to become Lieutenant Governor of New Jersey.[26]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Britnee Timberlake (Democratic) 81.9%
  • ▌ Irene DeVita (Republican) 16.6%
  • ▌ Clenard Howard Childress Jr. (Stop the Insanity) 1.5%
Assembly 36 Marlene Caride Democratic 2011 Incumbent resigned January 16, 2018, to become Commissioner of the New Jersey Department of Banking and Insurance.[27]
New member elected November 6, 2018.
Democratic hold.
Assembly 38 Joseph Lagana Democratic 2013 Incumbent resigned April 12, 2018, to join the State Senate.[28]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Lisa Swain (Democratic) 59.7%
  • ▌ Gail Horton (Republican) 40.3%
Assembly 38 Tim Eustace Democratic 2011 Incumbent resigned April 13, 2018, to become Deputy Director of the North Jersey District Water Supply Commission.[29]
New member elected November 6, 2018.
Democratic hold.
  • ▌ Green tickY Chris Tully (Democratic) 59.3%
  • ▌ Jayme Ouellette (Republican) 40.7%
Close

Notes

  1. [a]
    The Alaska House of Representatives is controlled by a coalition of Democrats, Republicans, and independents. The minority caucus consists of Republicans who are not part of the majority coalition.
  2. [b]
    On April 16, 2018, the Independent Democratic Conference, which had been in coalition with Republicans since 2012, dissolved, returning the chamber to Republican control.[1]
  3. [c]
    The Connecticut Senate was tied in the 2017-2019 session, but Democrats gained control in the 2018 elections. This chamber was not included in the previous total.
  4. [d]
    The upper houses of Arkansas, Delaware, Florida, Hawaii, Illinois, Minnesota, New Jersey, and Texas use a 2-4-4 term length system.
  5. [e]
    These figures represent the seats of Nebraska's unicameral legislature.
  6. [f]
    Includes a 2017 special election that flipped a seat to Democrats, winning them control of the chamber from the Majority Coalition Caucus
  7. [g]
    Counts seats that were vacant prior to the election towards the party that last held them
  8. [h]
    Counts seats in the officially nonpartisan Nebraska legislature towards the party that endorsed each candidate
  9. [i]
    Coalition consisted of 17 Democrats, 3 Republicans, and 2 Independents.
  10. [j]
    Coalition consisted of 15 Democrats, 8 Republicans, and 2 Independents.
  11. [k]
    Democrat Simcha Felder caucused with the Republicans until after the elections.
  12. [l]
    One Democrat caucused with the Republicans

References

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