# 2020 United States state legislative elections

The 2020 United States state legislative elections were held on November 3, 2020, for 86 state legislative chambers in 44 states. Across the fifty states, approximately 65 percent of all upper house seats and 85 percent of all lower house seats were up for election. Nine legislative chambers in the five permanently-inhabited U.S. territories and the federal district of Washington, D.C. also held elections. The elections took place concurrently with several other federal, state, and local elections, including the presidential election, U.S. Senate elections, U.S. House elections, and gubernatorial elections.
Prior to the elections, Democrats held 15 trifectas (control of the governor's office and legislative chambers), Republicans held 21 trifectas, and 14 states have a divided government. Nationwide, Republicans controlled approximately 60 percent of the legislative chambers and 52 percent of the legislative seats. These elections had a major impact on the 2020 redistricting cycle, as many states held their final legislative elections prior to the decennial drawing of new congressional and state legislative districts.
Following the election, Republicans controlled redistricting in 20 state governments, totaling 188 House districts, whereas Democrats had control in states with a total of 73 districts. Overall, these elections saw the fewest partisan changes in state legislatures since 1944.

## Summary table

Regularly scheduled elections were held in 86 of the 99 state legislative chambers in the United States. Nationwide, regularly scheduled elections were held for 5,876 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. 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 | Upper House | Upper House | Upper House | Lower House | Lower House | Lower House | Lower House |
| State | Seats up | Total | % up | Term | Seats up | Total | % up | Term |
| Alabama | 0 | 35 | 0 | 4 | 0 | 105 | 0 | 4 |
| Alaska | 10 | 20 | 50 | 4 | 40 | 40 | 100 | 2 |
| Arizona | 30 | 30 | 100 | 2 | 60 | 60 | 100 | 2 |
| Arkansas | 17 | 35 | 49 | 2/4 | 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 | 11 | 21 | 52 | 2/4 | 41 | 41 | 100 | 2 |
| Florida | 20 | 40 | 50 | 2/4 | 120 | 120 | 100 | 2 |
| Georgia | 56 | 56 | 100 | 2 | 180 | 180 | 100 | 2 |
| Hawaii | 13 | 25 | 52 | 2/4 | 51 | 51 | 100 | 2 |
| Idaho | 35 | 35 | 100 | 2 | 70 | 70 | 100 | 2 |
| Illinois | 20 | 59 | 34 | 2/4 | 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 | 67 | 67 | 100 | 2/4 | 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 | 49 | 51 | 4 | N/A (unicameral) | N/A (unicameral) | N/A (unicameral) | 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 | 0 | 80 | 0 | 2 |
| New Mexico | 42 | 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 | 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 | 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 | 1281 | 1972 | 65 | N/A | 4595 | 5411 | 85 | N/A |

## Electoral predictions

Louis Jacobson of The Cook Political Report predicted that Republican-held chambers that could potentially flip to Democratic control included both chambers in Arizona, the Florida Senate, both chambers in Georgia, the Iowa House, the Michigan House, the Minnesota Senate, both chambers in North Carolina, both chambers in Pennsylvania, and the Texas House. He predicted that Republicans could potentially gain control of the Maine Senate, the Minnesota House, and both chambers in New Hampshire, all of which were controlled by the Democratic Party. Additionally, Jacobson predicted that Republicans could win control of the Alaska House, which was currently controlled by a coalition of Democrats and Republicans.
Writing for Sabato's Crystal Ball, Chaz Nuttycombe highlighted the Alaska House and the New Hampshire Senate as the top pick-up opportunities for Republicans, and lists the Arizona House, the Arizona Senate, the Iowa House, the Michigan House, the Minnesota Senate, the North Carolina House, the North Carolina Senate, the Pennsylvania House, and the Texas House as the top pick-up opportunities for Democrats.
Most election predictors use:
* "Tossup": No advantage
* "Tilt": Advantage that is not quite as strong as "lean"
* "Lean": Slight advantage
* "Likely": Significant, but surmountable, advantage
* "Safe" or "Solid": Near-certain chance of victory
| State | PVI | Chamber | Last election | Sabato May 7, 2020 | Cook Nov. 2, 2020 | Result |
| Alaska | R+9 | Senate | R 13–7 | Safe R | Lean R | R 13–7 |
| Alaska | R+9 | House of Representatives | Coal. 23–15–2 | Tossup | Lean R (flip) | Coal. 21–17–2 |
| Arizona | R+5 | Senate | R 17–13 | Tilt R | Tossup | R 16–14 |
| Arizona | R+5 | House of Representatives | R 31–29 | Tilt R | Lean D (flip) | R 31–29 |
| Arkansas | R+15 | Senate | R 26–9 | Safe R | Solid R | R 28–7 |
| Arkansas | R+15 | House of Representatives | R 76–24 | Safe R | Solid R | R 78–22 |
| California | D+12 | State Senate | D 29–11 | Safe D | Solid D | D 31–9 |
| California | D+12 | State Assembly | D 61–18–1 | Safe D | Solid D | D 60–19–1 |
| Colorado | D+1 | Senate | D 19–16 | Safe D | Likely D | D 20–15 |
| Colorado | D+1 | House of Representatives | D 41–24 | Safe D | Solid D | D 41–24 |
| Connecticut | D+6 | State Senate | D 22–14 | Likely D | Solid D | D 24–12 |
| Connecticut | D+6 | House of Representatives | D 97–54 | Safe D | Solid D | D 97–54 |
| Delaware | D+6 | Senate | D 12–9 | Safe D | Likely D | D 14–7 |
| Delaware | D+6 | House of Representatives | D 26–15 | Safe D | Solid D | D 26–15 |
| Florida | R+2 | Senate | R 23–17 | Safe R | Lean R | R 24–16 |
| Florida | R+2 | House of Representatives | R 73–47 | Likely R | Likely R | R 78–42 |
| Georgia | R+5 | State Senate | R 35–21 | Safe R | Lean R | R 34–22 |
| Georgia | R+5 | House of Representatives | R 105–75 | Safe R | Lean R | R 103–77 |
| Hawaii | D+18 | Senate | D 24–1 | Safe D | Solid D | D 24–1 |
| Hawaii | D+18 | House of Representatives | D 46–5 | Safe D | Solid D | D 47–4 |
| Idaho | R+19 | Senate | R 28–7 | Safe R | Solid R | R 28–7 |
| Idaho | R+19 | House of Representatives | R 56–14 | Safe R | Solid R | R 58–12 |
| Illinois | D+7 | Senate | D 40–19 | Safe D | Solid D | D 41–18 |
| Illinois | D+7 | House of Representatives | D 74–44 | Safe D | Solid D | D 73–45 |
| Indiana | R+9 | Senate | R 40–10 | Safe R | Solid R | R 39–11 |
| Indiana | R+9 | House of Representatives | R 67–33 | Safe R | Solid R | R 71–29 |
| Iowa | R+3 | Senate | R 32–18 | Safe R | Likely R | R 32–18 |
| Iowa | R+3 | House of Representatives | R 53–47 | Tossup | Tossup | R 59–41 |
| Kansas | R+13 | Senate | R 31–9 | Safe R | Likely R | R 29–11 |
| Kansas | R+13 | House of Representatives | R 84–41 | Safe R | Likely R | R 86–39 |
| Kentucky | R+15 | Senate | R 28–10 | Safe R | Solid R | R 30–8 |
| Kentucky | R+15 | House of Representatives | R 61–39 | Safe R | Solid R | R 75–25 |
| Maine | D+3 | Senate | D 21–14 | Likely D | Lean D | D 22–13 |
| Maine | D+3 | House of Representatives | D 89–56–6 | Likely D | Likely D | D 80–67–4 |
| Massachusetts | D+12 | Senate | D 34–6 | Safe D | Solid D | D 37–3 |
| Massachusetts | D+12 | House of Representatives | D 127–32–1 | Safe D | Solid D | D 129–30–1 |
| Michigan | D+1 | House of Representatives | R 58–52 | Lean R | Tossup | R 58–52 |
| Minnesota | D+1 | Senate | R 35–32 | Tossup | Tossup | R 34–33 |
| Minnesota | D+1 | House of Representatives | D 75–59 | Likely D | Lean D | D 70–64 |
| Missouri | R+9 | Senate | R 23–10 | Safe R | Likely R | R 23–10 |
| Missouri | R+9 | House of Representatives | R 116–47 | Safe R | Likely R | R 114–49 |
| Montana | R+11 | Senate | R 30–20 | Safe R | Solid R | R 31–19 |
| Montana | R+11 | House of Representatives | R 58–42 | Safe R | Solid R | R 67–33 |
| Nevada | D+1 | Senate | D 13–8 | Safe D | Likely D | D 12–9 |
| Nevada | D+1 | Assembly | D 29–13 | Safe D | Likely D | D 26–16 |
| New Hampshire | D+1 | Senate | D 14–10 | Lean D | Lean D | R 14–10 |
| New Hampshire | D+1 | House of Representatives | D 234–166 | Likely D | Lean D | R 213–187 |
| New Mexico | D+3 | Senate | D 26–16 | Likely D | Solid D | D 27–15 |
| New Mexico | D+3 | House of Representatives | D 46–24 | Likely D | Solid D | D 44–25–1 |
| New York | D+11 | State Senate | D 40–23 | Likely D | Solid D | D 43–20 |
| New York | D+11 | State Assembly | D 105–44–1 | Safe D | Solid D | D 105–43–1–1 |
| North Carolina | R+3 | Senate | R 29–21 | Likely R | Tossup | R 28–22 |
| North Carolina | R+3 | House of Representatives | R 65–55 | Likely R | Lean R | R 69–51 |
| North Dakota | R+16 | Senate | R 37–10 | Safe R | Solid R | R 40–7 |
| North Dakota | R+16 | House of Representatives | R 79–15 | Safe R | Solid R | R 80–14 |
| Ohio | R+3 | Senate | R 24–9 | Safe R | Likely R | R 25–8 |
| Ohio | R+3 | House of Representatives | R 61–38 | Safe R | Likely R | R 64–35 |
| Oklahoma | R+20 | Senate | R 38–9 | Safe R | Solid R | R 38–9 |
| Oklahoma | R+20 | House of Representatives | R 77–23 | Safe R | Solid R | R 82–19 |
| Oregon | D+5 | State Senate | D 18–12 | Safe D | Likely D | D 18–12 |
| Oregon | D+5 | House of Representatives | D 38–22 | Safe D | Likely D | D 37–23 |
| Pennsylvania | EVEN | State Senate | R 28–21–1 | Safe R | Lean R | R 28–21–1 |
| Pennsylvania | EVEN | House of Representatives | R 110–93 | Lean R | Tossup | R 113–90 |
| Rhode Island | D+10 | Senate | D 33–5 | Safe D | Solid D | D 33–5 |
| Rhode Island | D+10 | House of Representatives | D 66–9 | Safe D | Solid D | D 65–10 |
| South Carolina | R+8 | Senate | R 27–19 | Safe R | Solid R | R 30–16 |
| South Carolina | R+8 | House of Representatives | R 80–44 | Safe R | Solid R | R 81–43 |
| South Dakota | R+14 | Senate | R 30–5 | Safe R | Solid R | R 32–3 |
| South Dakota | R+14 | House of Representatives | R 59–11 | Safe R | Solid R | R 62–8 |
| Tennessee | R+14 | Senate | R 28–5 | Safe R | Solid R | R 27–6 |
| Tennessee | R+14 | House of Representatives | R 73–26 | Safe R | Solid R | R 73–26 |
| Texas | R+8 | Senate | R 19–12 | Safe R | Likely R | R 18–13 |
| Texas | R+8 | House of Representatives | R 83–67 | Lean R | Tossup | R 83–67 |
| Utah | R+20 | State Senate | R 23–6 | Safe R | Solid R | R 23–6 |
| Utah | R+20 | House of Representatives | R 59–16 | Safe R | Solid R | R 58–17 |
| Vermont | D+15 | Senate | D 22–6–2 | Safe D | Solid D | D 21–7–2 |
| Vermont | D+15 | House of Representatives | D 95–43–7–5 | Safe D | Solid D | D 92–46–7–5 |
| Washington | D+7 | State Senate | D 28–21 | Safe D | Likely D | D 28–21 |
| Washington | D+7 | House of Representatives | D 57–41 | Safe D | Solid D | D 57–41 |
| West Virginia | R+19 | Senate | R 20–14 | Safe R | Likely R | R 23–11 |
| West Virginia | R+19 | House of Delegates | R 59–41 | Safe R | Solid R | R 76–24 |
| Wisconsin | EVEN | Senate | R 19–14 | Safe R | Likely R | R 21–12 |
| Wisconsin | EVEN | State Assembly | R 63–34 | Safe R | Likely R | R 61–38 |
| Wyoming | R+25 | Senate | R 27–3 | Safe R | Solid R | R 28–2 |
| Wyoming | R+25 | House of Representatives | R 50–9–1 | Safe R | Solid R | R 51–7–1–1 |

## National results

Lower house results by party :
| Party | Party | Seats before | Chambers before | Popular vote | % | Seats after | +/- | Chambers after | +/- |
| | Republican | 2780 | 28 | 65,005,945 | 48.78% | 2926 | 146 | 29 | 1 |
| | Democratic | 2600 | 20 | 65,716,359 | 49.32% | 2454 | 146 | 19 | 1 |
| | Independent | 23 | 0 | 665,710 | 0.50% | 22 | 1 | 0 | |
| | Progressive | 7 | 0 | 20,362 | 0.02% | 7 | | 0 | |
| | Libertarian | 0 | 0 | 680,373 | 0.51% | 1 | 1 | 0 | |
| | Independence | 1 | 0 | 109,184 | 0.08% | 1 | | 0 | |
| | Green | 0 | 0 | 108,405 | 0.08% | 0 | | 0 | |
| | Others | 0 | 1 | 951,992 | 0.71% | 0 | | 1 | |
| Total | Total | 5411 | 49 | 133,258,330 | 100.00% | 5411 | — | 49 | — |
Upper house results by party :
| Party | Party | Seats before | Chambers before | Popular vote | % | Seats after | +/- | Chambers after | +/- |
| | Republican | 1092 | 31 | 38,466,738 | 47.22% | 1097 | 5 | 32 | 1 |
| | Democratic | 876 | 19 | 41,103,188 | 50.46% | 872 | 4 | 18 | 1 |
| | Progressive | 2 | 0 | 83,975 | 0.10% | 2 | | 0 | |
| | Independent | 2 | 0 | 336,876 | 0.41% | 1 | 1 | 0 | |
| | Libertarian | 0 | 0 | 321,959 | 0.40% | 0 | | 0 | |
| | Independence | 0 | 0 | 120,546 | 0.15% | 0 | | 0 | |
| | Green | 0 | 0 | 82,860 | 0.10% | 0 | | 0 | |
| | Others | 0 | 0 | 942,801 | 1.16% | 0 | | 0 | |
| Total | Total | 1972 | 50 | 81,458,943 | 100.00% | 1972 | — | 50 | — |
Due to the impact the redistricting cycle will have on partisan control of Congress and state legislatures, the Democrats, who had not been in control of a majority of state legislatures across the U.S. since 2010, had hoped to retake control of key chambers in advance. However, despite fundraising efforts and projections of several Republican-held chambers in competitive states flipping, the Democrats failed to flip any state chambers, which they attributed to gerrymandering in the wake of the 2010 elections, as well as state laws restricting voting, President Donald Trump being on the ballot, and the Democrats' campaigning methods. Instead, Republicans flipped both chambers in the New Hampshire General Court.

## Maps

* States holding regularly-scheduled legislative and gubernatorial elections in 2020: Governor and all legislative chambers All legislative chambers A portion of legislative chambers None
* Partisan control of state and territorial governments following the 2020 elections: Democratic trifecta maintained Republican trifecta maintained Republican trifecta established Divided government established Divided government maintained 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 2020 elections +1 Rep seat +2 Rep seats +3–4 Rep seats +1 Dem seat +2 Dem seats +4 Dem seats
* Net changes to lower house seats after the 2020 elections +1 Rep seat +2 Rep seats +3–5 Rep seats +6–47 Rep seats +1 Dem seat +2 Dem seats +1 Lib seat +2 Ind seats

## State summaries
### 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 2020. The Alaska Senate is controlled by Republicans, while the Alaska House of Representatives is controlled by a coalition of Democrats, Republicans, and independents. The Alaska House of Representatives is currently the only state legislative chamber controlled by a cross-partisan coalition.

### Arizona

All of the seats of the Arizona Senate and the Arizona House of Representatives were up for election in 2020. Republicans have a government trifecta with control of the governorship and both state legislative chambers.

### 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 2020. Republicans held control of both chambers, maintaining a government trifecta.

### 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 2020. Democrats held control of both chambers, maintaining a government trifecta.

### 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 2020. Democrats held control of both chambers, maintaining a government trifecta.

### Connecticut

All of the seats of the Connecticut State Senate and the Connecticut House of Representatives were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### 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 2020. Democrats held control of both chambers, maintaining a government trifecta.

### 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 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Georgia

All of the seats of the Georgia State Senate and the Georgia House of Representatives were up for election in 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Hawaii

Half of the seats of the Hawaii Senate and all of the seats of the Hawaii House of Representatives were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### Idaho

All of the seats of the Idaho Senate and the Idaho House of Representatives were up for election in 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Illinois

One third of the seats of the Illinois Senate and all of the seats of the Illinois House of Representatives were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### Indiana

Half of the seats of the Indiana Senate and all of the seats of the Indiana House of Representatives were up for election in 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Iowa

Half of the seats of the Iowa Senate and all of the seats of the Iowa House of Representatives were up for election in 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Kansas

All of the seats of the Kansas Senate and the Kansas House of Representatives were up for election in 2020. Republicans held control of both chambers.

### Kentucky

Half of the seats of the Kentucky Senate and all of the seats of the Kentucky House of Representatives were up for election in 2020. Republicans held control of both chambers. Because the Kentucky legislature can override gubernatorial vetoes with a simple majority vote, Republicans have a veto-proof majority in the state legislature.

### Maine

All of the seats of the Maine Senate and the Maine House of Representatives were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### Massachusetts

All of the seats of the Massachusetts Senate and the Massachusetts House of Representatives were up for election in 2020. Democrats retained control of both chambers.

### Michigan

All of the seats of the Michigan House of Representatives were up for election in 2020. The Michigan Senate did not hold regularly scheduled elections in 2020. Republicans maintained control of the chamber.

### Minnesota

All of the seats of the Minnesota Senate and the Minnesota House of Representatives were up for election in 2020. Republicans maintained control of the senate, while Democrats maintained control of the house of representatives.

### Missouri

Half of the seats of the Missouri Senate and all of the seats of the Missouri House of Representatives were up for election in 2020. Republicans held control of both chambers, maintaining a government trifecta.

### Montana

Half of the seats of the Montana Senate and all of the seats of the Montana House of Representatives were up for election in 2020. Republicans held control of both chambers, and also gained a government trifecta by winning the gubernatorial election.

### Nebraska

Nebraska is the only U.S. state with a unicameral legislature; half of the seats of the Nebraska Legislature were up for election in 2020. 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.

### Nevada

Half of the seats of the Nevada Senate and all of the seats of the Nevada Assembly were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### New Hampshire

All of the seats of the New Hampshire Senate and the New Hampshire House of Representatives were up for election in 2020. Republicans gained control of both chambers, establishing a government trifecta.

### New Mexico

All of the seats of the New Mexico Senate and the New Mexico House of Representatives were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### New York

All of the seats of the New York State Senate and the New York State Assembly were up for election in 2020. Democrats held control of both chambers, maintaining a government trifecta.

### North Carolina

All of the seats of the North Carolina Senate and the North Carolina House of Representatives were up for election in 2020. Republicans retained control of both chambers.

### North Dakota

Half of the seats of the North Dakota Senate and the North Dakota House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Ohio

Half of the seats of the Ohio Senate and all of the seats of the Ohio House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Oklahoma

Half of the seats of the Oklahoma Senate and all of the seats of the Oklahoma House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Oregon

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 2020. Democrats retained control of both chambers, maintaining a government trifecta.

### Pennsylvania

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 2020. Republicans retained control of both chambers.

### Rhode Island

All of the seats of the Rhode Island Senate and the Rhode Island House of Representatives were up for election in 2020. Democrats retained control of both chambers, maintaining a government trifecta.

### South Carolina

All of the seats of the South Carolina Senate and the South Carolina House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### South Dakota

All of the seats of the South Dakota Senate and the South Dakota House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Tennessee

Half of the seats of the Tennessee Senate and all of the seats of the Tennessee House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Texas

Half of the seats of the Texas Senate and all of the seats of the Texas House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Utah

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 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Vermont

All of the seats of the Vermont Senate and the Vermont House of Representatives were up for election in 2020. Democrats retained control of both chambers.

### Washington

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 2020. Democrats retained control of both chambers, maintaining a government trifecta.

### West Virginia

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 2020. Republicans retained control of both chambers, maintaining a government trifecta.

### Wisconsin

Half of the seats of the Wisconsin Senate and all of the seats of the Wisconsin State Assembly were up for election in 2020. Republicans retained control of both chambers.

### Wyoming

Half of the seats of the Wyoming Senate and all of the seats of the Wyoming House of Representatives were up for election in 2020. Republicans retained control of both chambers, maintaining a government trifecta.

## 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 representative 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 retained control of the legislature.

### Northern Mariana Islands

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 the upper house, but the House was evenly split with one independent caucusing with the nine Republicans and two independents caucusing with the eight Democrats. Control of the chamber was secured for the Democratic-led caucus when one Republican crossed party lines to elect Democrat-aligned Independent Edmund Villagomez as Speaker of the House.

### Puerto Rico

All of the seats of the Senate of Puerto Rico and the House of Representatives of Puerto Rico are up for election in 2020. Members of the Senate and the House of Representatives both serve four-year terms. The New Progressive Party lost control of both chambers, although the Popular Democratic Party only managed to gain majority control in the House due to the number of third-party candidates elected.

### U.S. Virgin Islands

All of the seats of the unicameral Legislature of the Virgin Islands were up for election in 2020. All members of the legislature serve a two-year term. Democrats retained control of the legislature.

### 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 in 2020. Council members serve four-year terms. Democrats retained supermajority control of the council.

## Special elections

Various states held special elections for legislative districts throughout the year. Overall, Democrats flipped a total of five seats in Massachusetts, New Hampshire, Oregon, and South Carolina.

### Alabama

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 49 | April Weaver | Republican | 2010 | Incumbent resigned May 12, 2020, to become a regional director for the U.S. Department of Health and Human Services. New member elected November 17, 2020. Republican hold. | ▌Y Russell Bedsole (Republican) 63.2% ▌ Cheryl Patton (Democratic) 36.7% ▌ Write-in 0.1% |

### Alaska

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | M | Chris Birch | Republican | 2018 | Incumbent died August 7, 2019, of aortic dissection. New member elected November 3, 2020. Republican hold. | ▌Y Josh Revak (Republican) 57.6% ▌ Andy Hollerman (Independent) 42.1% ▌ Write-in 0.3% |

### Arkansas

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 22 | Mickey Gates | Republican | 2014 | Incumbent was removed from office October 11, 2019, after being charged with tax evasion. New member elected March 3, 2020. Republican hold. | ▌Y Richard McGrew (Republican) 68.3% ▌ Judy Bowers (Libertarian) 31.7% |
| House | 34 | John Walker | Democratic | 2010 | Incumbent died October 28, 2019. New member elected March 3, 2020. Democratic hold. | ▌Y Joy Springer (Democratic) 77.9% ▌ Roderick Talley (Independent) 22.1% |
| House | 96 | Grant Hodges | Republican | 2014 | Incumbent resigned July 10, 2020, to take a job with Northwest Arkansas Community College. New member elected November 3, 2020. Republican hold. | ▌Y Jill Bryant (Republican) 100.0% |

### California

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 28 | Jeff Stone | Republican | 2014 | Incumbent resigned November 1, 2019, after being appointed Western Regional Director of the U.S. Department of Labor. New member elected November 3, 2020. Republican hold. | ▌Y Melissa Melendez (Republican) 55.4% ▌ Elizabeth Romero (Democratic) 44.6% |

### Connecticut

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 48 | Linda Orange | Democratic | 1996 | Incumbent died November 20, 2019, of pancreatic cancer. New member elected January 14, 2020. Democratic hold. | ▌▌Y Brian Smith (Democratic) 52.3% ▌▌ Mark DeCaprio 47.7% |
| House | 132 | Brenda Kupchick | Republican | 2010 | Incumbent resigned November 22, 2019, after being elected First Selectwoman of Fairfield. New member elected January 14, 2020. Republican hold. | ▌▌Y Brian Farnen (Republican) 50.8% ▌ Jennifer Leeper (Democratic) 49.2% |
| House | 151 | Fred Camillo | Republican | 2008 | Incumbent resigned December 2, 2019, after being elected First Selectman of Greenwich. New member elected January 21, 2020. Republican hold. | ▌Y Harry Arora (Republican) 54.4% ▌ Cheryl Moss (Democratic) 45.6% |

### Florida

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 20 | Tom Lee | Republican | 2012 | Incumbent resigned November 3, 2020, to consider a run for Hillsborough County Clerk of Court. New member elected November 3, 2020. Republican hold. | ▌Y Danny Burgess (Republican) 54.8% ▌ Kathy Lewis (Democratic) 45.2% |

### Georgia

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 171 | Jay Powell | Republican | 2008 | Incumbent died November 25, 2019. New member elected January 28, 2020. Republican hold. | ▌Y Joe Campbell (Republican) 58.2% ▌ Jewell Howard 33.4% (Democratic) ▌ Tommy Akridge 8.4% (Republican) |
| Senate | 13 | Greg Kirk | Republican | 2014 | Incumbent died December 22, 2019, of bile duct cancer. New member elected March 3, 2020, after no one received over 50% of the vote on February 4, 2020. Republican hold. | First round: ▌Y Carden Summers (Republican) 43.1% ▌Y Jim Quinn (Republican) 42.2% ▌ Mary Egler (Democratic) 14.7% Runoff: ▌Y Carden Summers (Republican) 52.0% ▌ Jim Quinn (Republican) 48.0% |
| Senate | 4 | Jack Hill | Republican | 2008 | Incumbent died April 6, 2020. New member elected August 11, 2020 after no one received over 50% of the vote on June 9, 2020. Republican hold. | First round: ▌Y Billy Hickman (Republican) 33.5% ▌Y Scott Bohlke (Republican) 31.9% ▌ Stephen Sammons (Independent) 14.7% ▌ Kathy Palmer (Republican) 15.3% ▌ Neil Singleton (Republican) 3.0% Runoff: ▌Y Billy Hickman (Republican) 56.3% ▌ Scott Bohlke (Republican) 43.7% |
| Senate | 39 | Nikema Williams | Democratic | 2017 (special) | Incumbent resigned January 3, 2021, to become a U.S. representative. New member elected December 1, 2020 after no one received over 50% of the vote on November 3, 2020. Democratic hold. | First round: ▌Y Sonya Halpern (Democratic) 45.2% ▌Y Linda Pritchett (Democratic) 25.4% ▌ JoAnna Potts (Democratic) 15.5% ▌ Zan Fort (Democratic) 13.9% Runoff: ▌Y Sonya Halpern (Democratic) 80.8% ▌ Linda Pritchett (Democratic) 19.2% |

### Hawaii

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 16 | Breene Harimoto | Democratic | 2014 | Incumbent died June 18, 2020, of pancreatic cancer. New member elected November 3, 2020. Democratic hold. | ▌Y Bennette Misalucha (Democratic) 52.7% ▌ Kelly Puamailani Kitashima (Republican) 47.3% |

### Illinois

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 6 | John Cullerton | Democratic | 1990 | Incumbent resigned January 20, 2020 for personal reasons. New member elected November 3, 2020. Democratic hold. | ▌Y Sara Feigenholtz (Democratic) |
| Senate | 11 | Martin Sandoval | Democratic | 2002 | Incumbent resigned January 1, 2020 amid a corruption scandal. New member elected November 3, 2020. Democratic hold. | ▌Y Celina Villanueva (Democratic) 79.7% ▌ Mary Ellen Brown (Democracy in America) 20.3% |

### Kentucky

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 171 | Dan Seum | Republican | 1994 | Incumbent resigned November 16, 2019, for personal reasons. New member elected January 14, 2020. Republican hold. | ▌Y Mike Nemes (Republican) 63.6% ▌ Andrew Bailey (Democratic) 36.4% |
| House | 67 | Dennis Keene | Democratic | 2004 | Incumbent resigned December 16, 2019, to become the Kentucky Commissioner of Local Government. New member elected February 25, 2020. Democratic hold. | ▌Y Rachel Roberts (Democratic) 64.2% ▌ Mary Jo Wedding (Republican) 35.8% |
| House | 99 | Rocky Adkins | Democratic | 1986 | Incumbent resigned December 10, 2019, to become senior advisor to Governor Andy Beshear. New member elected February 25, 2020. Republican gain. | ▌Y Richard White (Republican) 56.0% ▌ Bill Redwine (Democratic) 44.0% |
| Senate | 26 | Ernie Harris | Republican | 1994 | Incumbent resigned on April 15, 2020 for personal reasons. New member elected December 1, 2020. Democratic gain. | ▌Y Karen Berg (Democratic) 57.0% ▌ Bill Ferko (Republican) 43.0% |

### Louisiana

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 54 | Reggie Bagala | Republican | 2019 | Incumbent died April 9, 2020, of COVID-19. New member elected July 11, 2020. Republican hold. | ▌Y Joseph Orgeron (Republican) 54.6% ▌ James Cantrelle (Republican) 19.6% ▌ Donny Lerille (Republican) 10.9% ▌ Kevin Duet (Republican) 9.3% ▌ Phil Gilligan (Republican) 3.3% ▌ Dave Carskadon (Republican) 2.4% |

### Maine

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 128 | Arthur Verow | Democratic | 2018 | Incumbent died December 19, 2019, of a heart attack. New member elected March 3, 2020. Democratic hold. | ▌Y Kevin O'Connell (Democratic) 58.0% ▌ Garrel Craig (Republican) 42.0% |

### Massachusetts

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | Middlesex 32 | Paul A. Brodeur | Democratic | 2010 | Incumbent resigned November 15, 2019, to become Mayor of Melrose. New member elected March 3, 2020. Democratic hold. | ▌Y Kate Lipper-Garabedian (Democratic) 81.2% ▌ Brandon Reid (Republican) 18.5% ▌ Write-in 0.4% |
| Senate | Plymouth and Barnstable | Vinny deMacedo | Republican | 2014 | Incumbent resigned November 29, 2019, to take a job in higher education. New member elected May 11, 2020. Democratic gain. | ▌Y Susan Moran (Democratic) 56.2% ▌ James McMahon (Republican) 43.7% ▌ Write-in 0.2% |
| Senate | Hampden and Hampshire 2 | Donald Humason Jr. | Republican | 2012 | Incumbent resigned January 5, 2020, to become Mayor of Westfield. New member elected May 11, 2020. Democratic gain. | ▌Y John Velis (Democratic) 64.2% ▌ John Cain (Republican) 35.8% ▌ Write-in 0.1% |
| House | Bristol 3 | Shaunna O'Connell | Republican | 2010 | Incumbent resigned January 6, 2020, to become Mayor of Taunton. New member elected June 2, 2020. Democratic gain. | ▌Y Carol Doherty (Democratic) 57.0% ▌ Bill Ferko (Republican) 42.8% ▌ Write-in 0.2% |
| House | Middlesex 37 | Jennifer Benson | Democratic | 2008 | Incumbent resigned January 8, 2020 to become President of Alliance for Business Leadership. New member elected June 2, 2020. Democratic hold. | ▌Y Danillo Sena (Democratic) 73.9% ▌ Catherine Clark (Republican) 25.6% ▌ Write-in 0.5% |

### Michigan

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 34 | Sheldon Neeley | Democratic | 2014 | Incumbent resigned November 11, 2019, to become Mayor of Flint. New member elected March 10, 2020. Democratic hold. | ▌Y Cynthia Neeley (Democratic) 91.8% ▌ Adam Ford (Republican) 8.2% |
| House | 4 | Isaac Robinson | Democratic | 2018 | Incumbent died March 29, 2020, from breathing problems. New member elected November 3, 2020. Democratic hold. | ▌Y Abraham Aiyash (Democratic) |

### Minnesota

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 30A | Nick Zerwas | Republican | 2012 | Incumbent resigned December 6, 2019, citing medical reasons. New member elected February 4, 2020. Republican hold. | ▌ Y Paul Novotny (Republican) 63.4% ▌ Chad Hobot (Democratic) 36.5% ▌ Write-in 0.1% |
| House | 60A | Diane Loeffler | Democratic | 2004 | Incumbent died November 16, 2019, of cancer. New member elected February 4, 2020. Democratic hold. | ▌Y Sydney Jordan (Democratic) 87.4% ▌ Martin Super (Legal Marijuana Now) 11.5% ▌ Write-in 1.1% |

### Mississippi

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 88 | Ramona Blackledge | Republican | 2019 | Incumbent resigned January 31, 2020 for personal reasons. New member elected June 23, 2020. Republican hold. | ▌Y Robin Robinson (Nonpartisan) 65.1% ▌ Michael Walker (Nonpartisan) 33.0% ▌ Jason Dykes (Nonpartisan) 1.9% |
| House | 37 | Gary Chism | Republican | 1999 | Incumbent resigned June 30, 2020, for personal reasons. New member elected October 13, 2020, after no one received over 50% of the vote on September 22, 2020. Republican hold. | First round: ▌Y Lynn Wright (Nonpartisan) 49.3% ▌Y David Chism (Nonpartisan) 32.1% ▌ Vicky Rose (Nonpartisan) 18.6% Runoff: ▌Y Lynn Wright (Nonpartisan) 63.4% ▌ David Chism (Nonpartisan) 36.6% |
| House | 66 | Jarvis Dortch | Democratic | 2015 | Incumbent resigned July 2, 2020, to become executive director of the Mississippi American Civil Liberties Union. New member elected October 13, 2020, after no one received over 50% of the vote on September 22, 2020. Democratic hold. | First round: ▌Y De'Keither Stamps (Nonpartisan) 40.0% ▌Y Bob Lee Jr. (Nonpartisan) 25.9% ▌ Gregory Divinity (Nonpartisan) 24.0% ▌ Calvin Williams (Nonpartisan) 6.1% ▌ Kathryn Perry (Nonpartisan) 2.4% ▌ Fabian Nelson (Nonpartisan) 1.7% Runoff: ▌Y De'Keither Stamps (Nonpartisan) 61.5% ▌ Bob Lee Jr. (Nonpartisan) 38.5% |
| Senate | 15 | Gary Jackson | Republican | 2003 | Incumbent resigned June 30, 2020, for health reasons. New member elected October 13, 2020, after no one received over 50% of the vote on September 22, 2020. Republican hold. | First round: ▌Y Bart Williams (Nonpartisan) 33.6% ▌Y Joyce Meek Yates (Nonpartisan) 27.9% ▌ Bricklee Miller (Nonpartisan) 24.6% ▌ Levon Murphy Jr. (Nonpartisan) 13.9% Runoff: ▌Y Bart Williams (Nonpartisan) 53.5% ▌ Joyce Meek Yates (Nonpartisan) 46.5% |
| Senate | 39 | Sally Doty | Republican | 2011 | Incumbent resigned July 16, 2020, after she was appointed executive director of the Mississippi Public Utilities Staff by Governor Tate Reeves. New member elected October 13, 2020, after no one received over 50% of the vote on September 22, 2020. Republican hold. | First round: ▌Y Bill Sones (Nonpartisan) 26.0% ▌Y Jason Barrett (Nonpartisan) 24.0% ▌ Beth Brown (Nonpartisan) 13.4% ▌ Michael Smith (Nonpartisan) 13.1% ▌ Prentiss Smith (Nonpartisan) 7.7% ▌ Ben Johnson (Nonpartisan) 6.2% ▌ Cindy Bryan (Nonpartisan) 3.9% ▌ Mike Campbell (Nonpartisan) 3.2% ▌ Josh Davis (Nonpartisan) 2.7% Runoff: ▌Y Jason Barrett (Nonpartisan) 56.9% ▌ Bob Lee Jr. (Nonpartisan) 43.1% |
| House | 87 | William Andrews III | Republican | 2019 | Incumbent resigned March 31, 2020. New member elected November 24, 2020, after no one received over 50% of the vote on November 3, 2020. Republican hold. | First round: ▌Y Joseph Tubb (Nonpartisan) 44.8% ▌Y Matthew Conoly (Nonpartisan) 37.7% ▌ David Wayne Morgan (Nonpartisan) 17.4% Runoff: ▌Y Joseph Tubb (Nonpartisan) 58.3% ▌ Bob Lee Jr. (Nonpartisan) 41.7% |

### New Hampshire

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | Merrimack 24 | Richard Marple | Republican | 2018 | Incumbent died December 13, 2019. New member elected March 10, 2020. Democratic gain. | ▌Y Kathleen Martins (Democratic) 51.0% ▌ Elliot Axelman (Republican) 49.0% |

### New Jersey

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 25 | Anthony R. Bucco | Republican | 1997 | Incumbent died September 16, 2019, of a heart attack. New member elected November 3, 2020. Republican hold. | ▌Y Anthony M. Bucco (Republican) 54.0% ▌ Rupande Mehta (Democratic) 46.0% |
| Assembly | 25 | Anthony M. Bucco | Republican | 2009 | Incumbent resigned October 24, 2019, after being appointed to the New Jersey Senate. New member elected November 3, 2020. Republican hold. | ▌Y Aura K. Dunn (Republican) 52.5% ▌ Darcy Draeger (Democratic) 47.5% |

### Oklahoma

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 28 | Jason Smalley | Republican | 2014 | Incumbent resigned January 31, 2020, to take a private sector job with Motorola Solutions. New member elected outright after the November 3, 2020, general election was cancelled. Republican hold. | ▌Y Zack Taylor (Republican) |

### Oregon

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 10 | Jackie Winters | Republican | 2002 | Incumbent died May 29, 2019, of lung cancer. New member elected November 3, 2020. Democratic gain. | ▌▌Y Deb Patterson (Democratic) 48.5% ▌ Denyc Boles (Republican) 47.8% ▌ Taylor Rickey (Libertarian) 3.6% ▌ Write-in 0.2% |

### Pennsylvania

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 48 | Mike Folmer | Republican | 2006 | Incumbent resigned September 18, 2019, after being charged with possession of child pornography. New member elected January 14, 2020. Republican hold. | ▌Y Dave Arnold (Republican) 64.7% ▌ Michael Schroeder (Democratic) 35.3% |
| House | 190 | Movita Johnson-Harrell | Democratic | 2019 (special) | Incumbent resigned December 13, 2019, after being charged with theft, perjury, and tampering with public records. New member elected February 25, 2020. Democratic hold. | ▌Y G. Roni Green (Democratic) 85.6% ▌ Wanda Logan (Republican) 13.6% ▌ Write-in 0.8% |
| House | 8 | Tedd Nesbit | Republican | 2014 | Incumbent resigned January 2, 2020, to join the Pennsylvania courts of common pleas from Mercer County. New member elected March 17, 2020. Republican hold. | ▌Y Timothy R. Bonner (Republican) 75.1% ▌ Phil Heasley (Democratic) 24.9% |
| House | 18 | Gene DiGirolamo | Republican | 1994 | Incumbent resigned January 6, 2020, after being elected to the Bucks County Board of Commissioners. New member elected March 17, 2020. Republican hold. | ▌Y K.C. Tomlinson (Republican) 55.2% ▌ Harold Hayes (Democratic) 44.8% |
| House | 58 | Justin Walsh | Republican | 2016 | Incumbent resigned December 26, 2019, to join the Pennsylvania courts of common pleas from Westmoreland County. New member elected March 17, 2020. Republican hold. | ▌Y Eric Davanzo (Republican) 52.6% ▌ Robert Prah Jr. (Democratic) 40.6% ▌ Ken Bach (Libertarian) 6.8% |

### Rhode Island

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 56 | Shelby Maldonado | Democratic | 2014 | Incumbent resigned December 16, 2019, to become the Hispanic Outreach Director for AIPAC. New member elected March 3, 2020. Democratic hold. | ▌Y Joshua Giraldo (Democratic) 99.6% ▌ Write-in 0.4% |

### South Carolina

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 115 | Peter M. McCoy Jr. | Republican | 2010 | Incumbent resigned March 30, 2020, to become interim U.S. Attorney for the District of South Carolina. New member elected August 11, 2020. Democratic gain. | ▌Y Spencer Wetmore (Democratic) 59.5% ▌ Josh Stokes (Republican) 39.3% ▌ Eugene Platt (Green) 1.1% ▌ Write-in 0.1% |
| House | 107 | Alan D. Clemmons | Republican | 2002 | Incumbent resigned July 17, 2020, to practice law. New member elected November 3, 2020. Republican hold. | ▌Y Case Brittain (Republican) 65.5% ▌ Tony Cahill (Democratic) 32.7% ▌ Wm Dettmering III (Libertarian) 1.8% ▌ Write-in 0.1% |

### Texas

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 28 | John Zerwas | Republican | 2006 | Incumbent resigned September 30, 2019, to join the University of Texas System. New member elected January 28, 2020 after no one received over 50% of the vote on November 5, 2019. Republican hold. | First round: ▌Y Elizabeth Markowitz (Democratic) 39.1% ▌Y Gary Gates (Republican) 28.5% ▌ Tricia Krenek (Republican) 18.1% ▌ Anna Allred (Republican) 9.3% ▌ Gary Hale (Republican) 2.4% ▌ Sarah Laningham (Republican) 1.7% ▌ Clinton Purnell (Republican) 0.9% Runoff: ▌Y Gary Gates (Republican) 58.1% ▌ Elizabeth Markowitz (Democratic) 41.9% |
| House | 100 | Eric Johnson | Democratic | 2010 (special) | Incumbent resigned June 17, 2019, after being elected Mayor of Dallas. New member elected January 28, 2020 after no one received over 50% of the vote on November 5, 2019. Democratic hold. | First round: ▌Y Lorraine Birabil (Democratic) 33.2% ▌Y James Armstrong III (Democratic) 20.8% ▌ Daniel Davis Clayton (Democratic) 20.7% ▌ Sandra Crenshaw (Democratic) 19.0% Runoff: ▌Y Lorraine Birabil (Democratic) 66.2% ▌ James Armstrong III (Democratic) 33.8% |
| House | 148 | Jessica Farrar | Democratic | 1994 | Incumbent resigned September 30, 2019. New member elected January 28, 2020 after no one received over 50% of the vote on November 5, 2019. Democratic hold. | First round: ▌Y Anna Eastman (Democratic) 20.3% ▌Y Luis LaRotta (Republican) 15.8% ▌ Adrian Garcia (Democratic) 12.1% ▌ Ryan McConnico (Republican) 10.8% ▌ Michele Leal (Democratic) 9.1% ▌ Penny Morales Shaw (Democratic) 8.0% ▌ Chris Watt (Democratic) 6.2% ▌ Chris Carmona (Independent) 4.4% ▌ Kendra Yarbrough Camarena (Democratic) 3.9% ▌ Rob Block (Democratic) 3.3% ▌ Anna Nunez (Democratic) 1.9% ▌ Carol Denson (Democratic) 1.6% ▌ Alva Trevino (Democratic) 1.5% ▌ Mia Mundy (Democratic) 0.7% ▌ Terah Isaacson (Democratic) 0.4% Runoff: ▌Y Anna Eastman (Democratic) 65.4% ▌ Luis LaRotta (Republican) 34.6% |
| Senate | 14 | Kirk Watson | Democratic | 2006 | Incumbent resigned April 30, 2020, to become the dean of the University of Houston's Hobby School of Public Affairs. New member elected July 14, 2020 after Rodriguez withdrew from the runoff. Democratic hold. | ▌Y Sarah Eckhardt (Democratic) 49.7% ▌ Eddie Rodriguez (Democratic) 33.8% ▌ Donald Zimmerman (Republican) 13.0% ▌ Waller Thomas Burns II (Republican) 1.2% ▌ Jeff Ridgeway (Independent) 1.2% ▌ Pat Dixon (Libertarian) 1.1% |
| Senate | 30 | Pat Fallon | Republican | 2018 | Incumbent resigned January 3, 2021 to become a U.S. representative. New member elected December 19, 2020 after no one received over 50% of the vote on September 29, 2020. Republican hold. | First round: ▌Y Shelley Luther (Republican) 32.2% ▌Y Drew Springer (Republican) 31.9% ▌ Jacob Minter (Democratic) 21.2% ▌ Christopher Watts (Republican) 6.2% ▌ Craig Carter (Republican) 5.0% ▌ Andy Hopper (Republican) 3.5% Runoff: ▌Y Drew Springer (Republican) 56.5% ▌ James Armstrong III (Republican) 43.5% |

### Virginia

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| House | 29 | Chris Collins | Republican | 2015 | Incumbent resigned June 28, 2020, after he was appointed to the Virginia General District Court. New member elected November 3, 2020. Republican hold. | ▌Y Bill Wiley (Republican) 63.7% ▌ Irina Khanin (Democratic) 36.2% ▌ Write-in 0.1% |

### Washington

| District | District | Incumbent | Incumbent | Incumbent | This race | This race |
| Chamber | No. | Representative | Party | First elected | Results | Candidates |
| Senate | 38 | John McCoy | Democratic | 2014 | Incumbent resigned April 17, 2020, citing health reasons. New member elected November 3, 2020. Democratic hold. | ▌Y June Robinson (Democratic) 58.8% ▌ Bernard Moody (Republican) 41.1% ▌ Write-in 0.1% |