Oregon 1st Congressional District
Akashic| Year | Margin (D minus R) |
|---|---|
| 2008 | +33.7% |
| 2012 | +29.8% |
| 2016 | +32.5% |
| 2020 | +39.0% |
| 2024 | +37.5% |
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 | 68.6%241,556 | 28.1%98,908 | 351,991 |
| 2022 | 1 | D | 67.9%210,682 | 31.9%99,042 | 310,243 |
| 2020 | 1 | D | 64.6%297,071 | 35.2%161,928 | 459,899 |
| 2018 | 1 | D | 63.6%231,198 | 32.1%116,446 | 363,249 |
| 2016 | 1 | D | 59.6%225,391 | 37.0%139,756 | 378,095 |
| 2014 | 1 | D | 57.3%160,038 | 34.5%96,245 | 279,253 |
| 2012 | 1 | D | 59.6%197,845 | 33.0%109,699 | 331,980 |
| 2010 | 1 | D | 54.7%160,357 | 41.9%122,858 | 292,909 |
| 2008 | 1 | D | 71.5%237,567 | 0.0%0 | 332,248 |
| 2006 | 1 | D | 62.8%169,409 | 33.7%90,904 | 269,627 |
| 2004 | 1 | D | 57.5%203,771 | 38.1%135,164 | 354,338 |
| 2002 | 1 | D | 62.7%149,215 | 34.0%80,917 | 238,036 |
| 2000 | 1 | D | 58.3%176,902 | 38.0%115,303 | 303,521 |
| 1998 | 1 | D | 50.1%119,993 | 47.1%112,827 | 239,496 |
| 1996 | 1 | D | 51.9%144,588 | 45.3%126,146 | 278,604 |
| 1994 | 1 | D | 47.7%121,147 | 47.6%120,846 | 253,989 |
| 1992 | 1 | D | 52.0%152,917 | 47.9%140,986 | 294,154 |
| 1990 | 1 | D | 63.1%150,292 | 30.4%72,382 | 238,259 |
| 1988 | 1 | D | 69.6%179,915 | 30.4%78,626 | 258,603 |
| 1986 | 1 | D | 61.7%141,585 | 38.3%87,874 | 229,495 |
| 1984 | 1 | D | 53.1%138,393 | 46.9%122,247 | 260,667 |
| 1982 | 1 | D | 53.8%118,638 | 46.2%101,720 | 220,378 |
| 1980 | 1 | D | 65.9%203,532 | 34.0%105,083 | 308,635 |
| 1978 | 1 | D | 62.9%158,706 | 37.1%93,640 | 252,378 |
| 1976 | 1 | D | 58.7%154,844 | 41.3%109,140 | 264,000 |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 55.8%1,076,424 | 40.9%788,991 | 1,927,949 |
| 2020 | D | 57.0%1,321,047 | 39.4%912,814 | 2,318,847 |
| 2016 | D | 56.6%1,105,119 | 33.3%651,106 | 1,952,478 |
| 2014 | D | 55.7%814,537 | 36.9%538,847 | 1,461,618 |
| 2010 | D | 57.2%825,507 | 39.2%566,199 | 1,442,588 |
| 2008 | D | 48.9%864,392 | 45.6%805,159 | 1,767,504 |
| 2004 | D | 63.4%1,128,728 | 31.7%565,254 | 1,780,550 |
| 2002 | R | 39.6%501,898 | 56.2%712,287 | 1,267,221 |
| 1998 | D | 61.1%682,425 | 33.8%377,739 | 1,117,747 |
| 1996 | R | 45.9%624,370 | 49.8%677,336 | 1,360,230 |
| 1992 | R | 46.7%639,851 | 52.4%717,455 | 1,370,240 |
| 1990 | R | 46.2%507,743 | 53.7%590,095 | 1,099,255 |
| 1986 | R | 36.0%375,735 | 63.0%656,317 | 1,042,555 |
| 1984 | R | 33.4%406,122 | 66.5%808,152 | 1,214,735 |
| 1980 | R | 44.0%501,963 | 52.1%594,290 | 1,139,939 |
| 1978 | R | 38.3%341,616 | 61.7%550,165 | 891,781 |
Oregon's 1st anchors Portland's west side and inner suburbs, where a D+27.4 presidential margin in 2024 reflects a dense, highly educated electorate that has voted reliably left of the state's own median for over two decades.
Across the recorded series it reached a Democratic high of 39.0 points in 2020. Between 2020 and 2024 the district moved 1.5 points toward the Republican candidate; the 2024 margin was 37.5 points.
A population of 706,171, a 69% non-Hispanic-white share, and a median household income of $98,323 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 3 and Congressional District 2.
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 →
Oregon 1st Congressional District. Akashic. https://akashic.app/cd/4101/. Accessed May 20, 2026. License: CC BY 4.0.