Washington State Senate seat · lines in effect since 2024
Washington Legislative District 9
A district of about 194,000 people, 39% of adults with a bachelor's degree. It votes R+15.6 relative to the nation for president.
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 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 | |
|---|---|---|
| U.S. Senate | No race | R+16.0 |
| Governor | R+24.8 | R+21.7 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 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 9.
Higher than 65% of seats.
Higher than 75% of seats.
Lower than 79% of seats.
Lower than 75% of seats.
Lower than 77% of seats.
Less dense than 98% 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 3926% college gradsR+7.6Not up in 2026District 35
30% college gradsD+0.3Flipped DDistrict 20
24% college gradsR+28.0Not up in 2026District 2
25% college gradsR+15.4Not 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