Washington 9th Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +36.4% |
| 2012 | +37.5% |
| 2016 | +43.7% |
| 2020 | +44.7% |
| 2024 | +40.9% |
Federal officeholders only. State and local officeholders are planned for the next data pass.
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.
| 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 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 59.1%2,252,577 | 40.6%1,549,187 | 3,812,391 |
| 2022 | D | 57.1%1,741,827 | 42.6%1,299,322 | 3,047,900 |
| 2018 | D | 58.4%1,803,364 | 41.6%1,282,804 | 3,086,168 |
| 2016 | D | 59.0%1,913,979 | 41.0%1,329,338 | 3,243,317 |
| 2012 | D | 60.5%1,855,493 | 39.5%1,213,924 | 3,069,417 |
| 2010 | D | 52.4%1,314,930 | 47.6%1,196,164 | 2,511,094 |
| 2006 | D | 56.9%1,184,659 | 39.9%832,106 | 2,083,734 |
| 2004 | D | 55.0%1,549,708 | 42.7%1,204,584 | 2,818,651 |
| 2000 | D | 48.7%1,199,437 | 48.6%1,197,208 | 2,461,379 |
| 1998 | D | 58.4%1,103,184 | 41.6%785,377 | 1,888,561 |
| 1994 | R | 44.3%752,352 | 55.7%947,821 | 1,700,173 |
| 1992 | D | 54.0%1,197,973 | 46.0%1,020,829 | 2,218,802 |
| 1988 | R | 48.9%904,183 | 51.1%944,359 | 1,848,542 |
| 1986 | D | 50.7%677,471 | 48.7%650,931 | 1,337,367 |
| 1982 | D | 69.0%943,655 | 24.3%332,273 | 1,368,476 |
| 1980 | R | 45.8%792,052 | 54.2%936,317 | 1,728,369 |
| 1976 | D | 71.8%1,071,219 | 24.2%361,546 | 1,491,111 |
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. 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 43% 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.
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 →
Washington 9th Congressional District. Akashic. https://akashic.app/cd/5309/. Accessed May 20, 2026. License: CC BY 4.0.