- Lead
- 13,223
- Total
- 82,123
- vs nation
- R+14.6
Washington 9th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 12,401
- Total
- 83,301
- vs nation
- R+19.3
- Lead
- 12,217
- Total
- 68,520
- vs nation
- R+19.9
- Lead
- 11,332
- Total
- 66,704
- vs nation
- R+20.8
- Lead
- 7,464
- Total
- 66,431
- vs nation
- R+18.5
- Lead
- 13,754
- Total
- 63,937
- vs nation
- R+19.1
- Lead
- 13,591
- Total
- 56,702
- vs nation
- R+24.5
- Lead
- 1,660
- Total
- 53,202
- vs nation
- R+11.6
Key facts
- 2024 presidential margin
- R+16.1MIT Election Lab
- Population
- 156,9262024 5-year
- Population density
- 17 / sq mi2024 5-year · TIGER/Line
- Land area
- 9,335 sq miTIGER/Line
- Median household income
- $76,4752024 5-year
- White (non-Hispanic)
- 78.5%2024 5-year
- Black
- 1.4%2024 5-year
- Hispanic / Latino
- 9.7%2024 5-year
- Peak Democratic margin
- D+34.1 in 1936MIT Election Lab
- Peak Republican margin
- R+42.7 in 1904MIT Election Lab
- Most similar
- Legislative (Senate) District 6, WA · twin score 94.9
presidential history
Party record book
Washington 9th State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
65.3%
22,462 votes · D+34.1 · modeled estimate
Runner-up · William J. Bryan, 1896 · 64.0%
Republican
Theodore Roosevelt1904
68.0%
11,291 votes · R+42.7 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 67.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
34,016votes
40.8% of the vote · R+14.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 32,959 votes
Republican
Donald Trump2020
46,417votes
55.7% of the vote · R+14.9 · modeled estimate
Runner-up · Donald Trump, 2024 · 46,182 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
William J. Bryan1896
+35.4pts D vs U.S.
Place D+29.3 · U.S. R+6.1 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · +9.9 pts
Republican
George W. Bush2000
+24.5pts R vs U.S.
Place R+24.0 · U.S. D+0.5 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +23.1 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
Its Republican presidential margin was R+16.0 in 2024 and R+11.2 in 2008. About 373,000 residents lived here, with White alone at 80.4% in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 34.1 points in 1936 and a Republican high of 42.7 points in 1904. Between 2020 and 2024 the district moved 1.2 points toward the Republican candidate; the 2024 margin was 16.1 points.
A population of 156,926, a 79% non-Hispanic-white share, and a median household income of $76,475 describe the district. The district's voting pattern over the last decade is most similar to that of Legislative (Senate) District 6 and Legislative (Senate) District 4.
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Washington 9th State Senate District. Akashic. https://akashic.app/sld-upper/53009/. Accessed May 20, 2026. License: CC BY 4.0.