Religious adherence is published only at the county level (U.S. Religion Census). See San Juan County.
American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.
Washington 40th State Senate District
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Washington 40th State Senate DistrictHarrisD+41.0
20082024
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic
68.5%
63,877
Donald TrumpRepublican
27.5%
25,665
Robert F. Kennedy Jr.We The People
4.0%
3,723
D+60R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 3 counties it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (3 counties) — table
2024 presidential result by county for Washington 40th State Senate District — winner and D-vs-R margin.
County
Winner
Margin
San Juan County, WA
Democratic
D+51.1
Skagit County, WA
Democratic
D+8.8
Whatcom County, WA
Democratic
D+24.7
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5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
Year
Won
Democratic
Republican
Other
Margin
Total
D
68.5%Harris63,877
27.5%Trump25,665
4.0%Kennedy3,723
+41.0%
93,265
D
67.3%Biden65,312
29.5%Trump28,611
3.2%Jorgensen3,095
+37.8%
97,018
D
61.9%Clinton48,465
30.2%Trump23,613
7.9%Johnson6,203
+31.7%
78,281
D
63.3%Obama45,786
36.7%Romney26,573
0.0%
+26.6%
72,359
D
63.5%Obama47,007
34.6%McCain25,601
1.9%Nader1,436
+28.9%
74,044
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presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2008
+28.9%
2012
+26.6%
2016
+31.7%
2020
+37.8%
2024
+41.0%
DemocraticRepublican
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current representation
Current officeholders
DLiz LovelettState Senate · 40
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+40.9, this district anchors the heavily Democratic core of the Seattle metro area, where dense, highly educated neighborhoods consistently produce some of the state's widest partisan gaps.
Across the recorded series it reached a Democratic high of 41.0 points in 2024. Between 2020 and 2024 the district moved 3.1 points toward the Democratic candidate; the 2024 margin was 41.0 points.
A population of 156,673, a 78% non-Hispanic-white share, and a median household income of $86,990 describe the district. The district's voting pattern over the last decade is most similar to that of Legislative (Senate) District 22 and Legislative (Senate) District 23.
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Political twins — state-senate districts
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Washington 40th State Senate District. Akashic. https://akashic.app/sld-upper/53040/. Accessed May 20, 2026. License: CC BY 4.0.
How did Washington 40th State Senate District vote in 2024?
In 2024, Washington 40th State Senate District voted Democratic by 41.0 points (D+41.0), carried by the Democratic candidate. Out of 93,265 votes cast, 63,877 went Democratic and 25,665 went Republican.
How many people live in Washington 40th State Senate District?
Washington 40th State Senate District has a population of 156,673 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Washington 40th State Senate District?
Median household income in Washington 40th State Senate District is $86,990 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Washington 40th State Senate District?
Akashic tracks 5 presidential elections in Washington 40th State Senate District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.
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