Federal officeholders only. State and local officeholders are planned for the next data pass.
2026 election
On the ballot
WA-09 · U.S. House
DDemocrat Adam Smith holds the seat and is contesting it.
Primary held August 4, 2026. Akashic does not yet carry the nominees for this contest.
How the seat has run
Year
U.S. House
President
Ran ahead
2024
D+97.9Adam Smith
D+40.9
+56.9
2022
D+43.4Adam Smith
—
—
2020
D+48.4Adam Smith
D+44.7
—
2018
D+100.0Adam Smith
—
—
“Ran ahead” is how far the winning party’s House candidate ran ahead of that party’s presidential margin in the same district. A dash means the House race and the presidential figure were measured on different district lines, so the two cannot be subtracted — both are still shown unchanged.
U.S. House elections · 17 House
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Source · MIT Election Lab (MEDSL), House. CC BY 4.0.
Year
District
Won
Democratic
Republican
Total
2024
9
D
97.9%273,381
0.0%0
279,298
2022
9
D
71.6%171,746
28.2%67,631
239,848
2020
9
D
74.1%258,771
25.7%89,697
349,050
2018
9
D
100.0%240,567
0.0%0
240,567
2016
9
D
72.9%205,165
27.1%76,317
281,482
2014
9
D
70.8%118,132
29.2%48,662
166,794
2012
9
D
71.6%192,034
28.4%76,105
268,139
2010
9
D
54.9%123,743
45.1%101,851
225,594
2008
9
D
65.4%176,295
34.6%93,080
269,375
2006
9
D
65.7%119,038
34.3%62,082
181,120
2004
9
D
63.3%162,433
34.4%88,304
256,671
2002
9
D
58.5%95,805
38.6%63,146
163,710
2000
9
D
61.7%135,452
35.0%76,766
219,623
1998
9
D
64.7%111,948
35.3%61,108
173,056
1996
9
D
50.1%105,236
47.3%99,199
209,867
1994
9
R
48.2%72,451
51.8%77,833
150,284
1992
9
D
52.1%110,902
43.2%91,910
212,919
Anchored in south Seattle and its inner suburbs, WA-09 regularly posts some of the widest presidential margins in the country, reflecting a dense, majority-minority electorate with strong labor-organizing roots.
Across the recorded series it reached a Democratic high of 44.7 points in 2020 and a Republican high of 62.2 points in 1904. Between 2020 and 2024 the district moved 3.8 points toward the Republican candidate; the 2024 margin was 40.9 points.
A population of 768,394, a 41% non-Hispanic-white share, and a median household income of $100,420 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 7 and Congressional District 16.
Akashic
Political twins — districts
The congressional 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 → · Or open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Washington 9th Congressional District. Akashic. https://akashic.app/cd/5309/. Accessed May 20, 2026. License: CC BY 4.0.
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How did Washington 9th Congressional District vote in 2024?
In 2024, Washington 9th Congressional District voted Democratic by 40.9 points (D+40.9), carried by the Democratic candidate. Out of 320,258 votes cast, 219,152 went Democratic and 88,058 went Republican.
When did Washington 9th Congressional District last vote Republican?
The most recent presidential election in which Washington 9th Congressional District voted Republican was 1988.
How many people live in Washington 9th Congressional District?
Washington 9th Congressional District has a population of 768,394 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Washington 9th Congressional District?
Median household income in Washington 9th Congressional District is $100,420 — above the national median of $80,734. The Washington state median is $98,141.
What is the political history of Washington 9th Congressional District?
Akashic tracks 38 presidential elections in Washington 9th Congressional District from 1876 to 2024. Of those, 15 went Democratic and 17 went Republican.