- Lead
- 23,963
- Total
- 64,897
- vs nation
- D+38.4
Washington 11th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 29,973
- Total
- 73,293
- vs nation
- D+36.4
- Lead
- 22,436
- Total
- 58,635
- vs nation
- D+36.2
- Lead
- 15,607
- Total
- 56,125
- vs nation
- D+24.0
- Lead
- 15,673
- Total
- 53,525
- vs nation
- D+22.0
- Lead
- 9,190
- Total
- 52,477
- vs nation
- D+20.0
- Lead
- 5,813
- Total
- 47,001
- vs nation
- D+11.8
- Lead
- 5,449
- Total
- 43,896
- vs nation
- D+3.9
Key facts
- 2024 presidential margin
- D+36.9MIT Election Lab
- Population
- 156,8892024 5-year
- Population density
- 4,002 / sq mi2024 5-year · TIGER/Line
- Land area
- 39.2 sq miTIGER/Line
- Median household income
- $99,3942024 5-year
- White (non-Hispanic)
- 39.3%2024 5-year
- Black
- 11.1%2024 5-year
- Hispanic / Latino
- 14.9%2024 5-year
- Peak Democratic margin
- D+40.9 in 2020MIT Election Lab
- Peak Republican margin
- R+64.1 in 1904MIT Election Lab
- Most similar
- Legislative (Senate) District 33, WA · twin score 95.7
presidential history
Party record book
Washington 11th 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
Joe Biden2020
69.0%
50,589 votes · D+40.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 66.6%
Republican
Theodore Roosevelt1904
77.2%
1,500 votes · R+64.1 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 71.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
50,589votes
69.0% of the vote · D+40.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 43,220 votes
Republican
Ronald Reagan1984
23,515votes
59.4% of the vote · R+19.8 · modeled estimate
Runner-up · George W. Bush, 2004 · 21,289 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
Kamala Harris2024
+38.4pts D vs U.S.
Place D+36.9 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +36.4 pts
Republican
Theodore Roosevelt1904
+44.5pts R vs U.S.
Place R+64.1 · U.S. R+19.7 · modeled estimate
Runner-up · Benjamin Harrison, 1892 · +29.6 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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2020 | D | 74.4%59,670 | 25.6%20,481 | 80,151 |
| 2018 | D | 81.0%51,097 | 19.0%11,972 | 63,069 |
Washington 11th State Senate District sits in the Pacific Northwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 40.9 points in 2020 and a Republican high of 64.1 points in 1904. Between 2020 and 2024 the district moved 4.0 points toward the Republican candidate; the 2024 margin was 36.9 points.
A population of 156,889, a 39% non-Hispanic-white share, and a median household income of $99,394 describe the district. The district's voting pattern over the last decade is most similar to that of Legislative (Senate) District 33 and Legislative (Senate) District 47.
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 11th State Senate District. Akashic. https://akashic.app/sld-upper/53011/. Accessed May 20, 2026. License: CC BY 4.0.