Washington State Senate seat · lines in effect since 2024
Washington Legislative District 12
A district of about 156,000 people, 38% of adults with a bachelor's degree. It votes D+2.2 relative to the nation for president.
2024 election
Nov 5, 2024- Keith Goehner (R) · won55.8%
- Jim Mayhew (D)44.1%
Source: Washington Secretary of StateUpdated Sep 30, 2026, 12:29 PM ET
Where it sits among all 49 seats
Every Washington State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every election for this seat
15 races since 1968. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2024 | |||
| 2024 | Keith Goehner (R) | Jim Mayhew (D) | 11.7 |
| Lines first used in 2012 | |||
| 2020 | Brad Hawkins (R) | — | Unopposed |
| 2016 | Brad Hawkins (R) | Jon Wyss (R) | 12.0 |
| 2012 | Linda Evans Parlette (R) | — | Unopposed |
| Lines first used in 2002 | |||
| 2008 | Linda Evans Parlette (R) | — | Unopposed |
| 2004 | Linda Evans Parlette (R) | — | Unopposed |
| Lines first used in 1992 | |||
| 2000 | Linda Evans Parlette (R) | — | Unopposed |
| 1996 | George L. Sellar (R) | — | Unopposed |
| 1992 | George L. Sellar (R) | Jagla (D) | 3.9 |
| Lines first used in 1982 | |||
| 1988 | George L. Sellar (R) | B. Conrad Detering (D) | 35.3 |
| 1984 | George L. Sellar (R) | Bernheisel (D) | 38.0 |
| Lines first used in 1972 | |||
| 1980 | George L. Sellar (R) | Philip C. Andrews (I) | 86.2 |
| 1976 | George L. Sellar (R) | Sam Boddy Jr. (D) | 23.3 |
| 1972 | George L. Sellar (R) | Stephen N. Brundage (D) | 13.6 |
| Lines first used in 1962 | |||
| 1968 | R. D. McDougall (R) | H. B. Hanna (D) | 15.4 |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Districts that overlap District 12
The state's districts in other chambers that share residents with this one, and the share of District 12's area in each.
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2020 | 2024 | |
|---|---|---|
| President | R+5.7 | R+9.6 |
| U.S. Senate | No race | R+8.2 |
| Governor | R+15.1 | R+17.7 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 8, 2026, 7:01 PM ET
Who lives here, compared
Grey bars show the spread of all 49 seats. Small marks are other seats in Washington. The black marker is District 12.
Higher than 62% of seats.
Higher than 54% of seats.
Higher than 85% of seats.
Lower than 83% of seats.
Lower than 67% of seats.
Less dense than 92% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean. 1 of the 4 flipped this year.
District 1738% college gradsD+8.4Not up in 2026District 42
34% college gradsD+11.3Held DDistrict 35
30% college gradsD+0.3Flipped DDistrict 10
32% college gradsD+7.9Not up in 2026
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET