2020 general · November 3, 2020
2020 Washington State Senate election results, district by district
Every Washington State Senate district in the 2020 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Democrats controlled the chamber · 49 seats
After the electionD 29 · R 20
Races26
Changed party2
Unopposed15%4 races
Incumbents defeated2
Every district
D 13 · R 13
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Derek Stanford (D) | 26.6 | |
| LD-2 | Jim McCune (R) | 27.5 | |
| LD-3 | Andy Billig (D) | 16.5 | |
| LD-4 | Mike Padden (R) | 25.2 | |
| LD-5 | Mark Mullet (D) | 0.1 | |
| LD-9 | Mark Schoesler (R) | 31.2 | |
| LD-10 | Ron Muzzall (R) | 1.9 | |
| LD-11 | Bob Hasegawa (D) | Unopposed | |
| LD-12 | Brad Hawkins (R) | Unopposed | |
| LD-14 | Curtis King (R) | Unopposed | |
| LD-16 | Perry Dozier (R) | 18.0 | |
| LD-17 | Lynda Wilson (R) | 9.1 | |
| LD-18 | Ann Rivers (R) | 15.8 | |
| LD-19 | Jeff Wilson (R) | 10.6 | FlippedIncumbent lost |
| LD-20 | John Braun (R) | Unopposed | |
| LD-22 | Sam Hunt (D) | 34.5 | |
| LD-23 | Christine Rolfes (D) | 27.9 | |
| LD-24 | Kevin Van De Wege (D) | 8.2 | |
| LD-25 | Chris Gildon (R) | 7.7 | |
| LD-27 | Jeannie Darneille (D) | 39.3 | |
| LD-28 | T'wina Nobles (D) | 1.4 | FlippedIncumbent lost |
| LD-38 | June Robinson (D) | 17.7 | |
| LD-39 | Keith Wagoner (R) | 31.0 | |
| LD-40 | Liz Lovelett (D) | 39.1 | |
| LD-41 | Lisa Wellman (D) | 39.9 | |
| LD-49 | Annette Cleveland (D) | 13.1 |
Washington State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab