Washington 1st Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +21.5% |
| 2012 | +19.4% |
| 2016 | +25.8% |
| 2020 | +30.4% |
| 2024 | +28.5% |
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 | 1 | D | 63.0%227,213 | 36.7%132,538 | 360,658 |
| 2022 | 1 | D | 63.5%181,992 | 36.4%104,329 | 286,684 |
| 2020 | 1 | D | 58.6%249,944 | 41.3%176,407 | 426,862 |
| 2018 | 1 | D | 59.3%197,209 | 40.7%135,534 | 332,743 |
| 2016 | 1 | D | 55.4%193,619 | 44.6%155,779 | 349,398 |
| 2014 | 1 | D | 55.0%124,151 | 45.0%101,428 | 225,579 |
| 2012 | 1 | D | 53.9%177,025 | 46.1%151,187 | 328,212 |
| 2010 | 1 | D | 57.7%172,642 | 42.3%126,737 | 299,379 |
| 2008 | 1 | D | 67.8%233,780 | 32.2%111,240 | 345,020 |
| 2006 | 1 | D | 67.7%163,832 | 32.3%78,105 | 241,937 |
| 2004 | 1 | D | 62.3%204,121 | 36.0%117,850 | 327,769 |
| 2002 | 1 | D | 55.6%114,087 | 41.3%84,696 | 205,034 |
| 2000 | 1 | D | 54.6%155,820 | 42.6%121,823 | 285,636 |
| 1998 | 1 | D | 49.8%112,726 | 44.1%99,910 | 226,473 |
| 1996 | 1 | R | 46.3%122,187 | 53.7%141,948 | 264,135 |
| 1994 | 1 | R | 48.3%94,110 | 51.7%100,554 | 194,664 |
| 1992 | 1 | D | 54.9%148,844 | 42.0%113,897 | 271,274 |
| 1990 | 1 | R | 48.0%92,447 | 52.0%100,339 | 192,786 |
| 1988 | 1 | R | 44.6%122,646 | 55.4%152,265 | 274,911 |
| 1986 | 1 | R | 48.6%92,697 | 51.4%97,969 | 190,666 |
| 1984 | 1 | R | 43.7%115,001 | 56.3%147,926 | 262,927 |
| 1982 | 1 | R | 32.4%59,444 | 67.6%123,956 | 183,400 |
| 1980 | 1 | R | 18.1%41,830 | 78.3%180,475 | 230,534 |
| 1978 | 1 | R | 33.7%52,706 | 64.0%99,942 | 156,193 |
| 1976 | 1 | R | 25.8%58,006 | 71.9%161,354 | 224,561 |
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 |
Washington's 1st stretches from Eastside tech suburbs east of Lake Washington into rural Snohomish County, blending high-income professional households with timber and farming communities in a district that has trended steadily toward Democratic margins over the past decade.
Across the recorded series it reached a Democratic high of 30.4 points in 2020. Between 2020 and 2024 the district moved 1.9 points toward the Republican candidate; the 2024 margin was 28.5 points.
A population of 771,644, a 62% non-Hispanic-white share, and a median household income of $134,799 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 16 and Congressional District 11.
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 1st Congressional District. Akashic. https://akashic.app/cd/5301/. Accessed May 20, 2026. License: CC BY 4.0.