- Lead
- 160,193
- Total
- 351,381
- vs nation
- D+47.1
Oregon 3rd Congressional District
▦ precinct · ▥ counties · ▢ no spatial detail
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 182,872
- Total
- 389,453
- vs nation
- D+42.5
- Lead
- 142,937
- Total
- 330,166
- vs nation
- D+41.2
- Lead
- 123,462
- Total
- 301,396
- vs nation
- D+37.1
- Lead
- 129,606
- Total
- 301,281
- vs nation
- D+35.7
- Lead
- 91,505
- Total
- 303,824
- vs nation
- D+32.6
- Lead
- 55,428
- Total
- 250,891
- vs nation
- D+21.6
- Lead
- 49,298
- Total
- 227,194
- vs nation
- D+13.2
Key facts
- 2024 presidential margin
- D+45.6MIT Election Lab
- Population
- 706,0992024 5-year
- Population density
- 509 / sq mi2024 5-year · TIGER/Line
- Land area
- 1,386 sq miTIGER/Line
- Median household income
- $89,3262024 5-year
- White (non-Hispanic)
- 64.5%2024 5-year
- Black
- 5.5%2024 5-year
- Hispanic / Latino
- 14.2%2024 5-year
- Peak Democratic margin
- D+47.0 in 2020MIT Election Lab
- Peak Republican margin
- R+67.3 in 1904MIT Election Lab
- Most similar
- Congressional District 1, OR · twin score 93.9
presidential history
Party record book
Oregon 3rd Congressional District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Joe Biden2020
72.0%
280,391 votes · D+47.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 70.7%
Republican
Theodore Roosevelt1904
77.5%
11,599 votes · R+67.3 · modeled estimate
Runner-up · William McKinley, 1900 · 69.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
280,391votes
72.0% of the vote · D+47.0 · modeled estimate
Runner-up · Kamala Harris, 2024 · 248,495 votes
Republican
Ronald Reagan1984
115,531votes
51.5% of the vote · R+3.5 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · 114,565 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Kamala Harris2024
+47.1pts D vs U.S.
Place D+45.6 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +42.5 pts
Republican
Theodore Roosevelt1904
+47.6pts R vs U.S.
Place R+67.3 · U.S. R+19.7 · modeled estimate
Runner-up · Benjamin Harrison, 1892 · +43.6 pts
Current officeholders
Federal officeholders only. State and local officeholders are planned for the next data pass.
On the ballot
Democrat Maxine Dexter holds the seat and is contesting it.
Primary held May 19, 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+42.5Maxine E. Dexter | D+45.6 | −3.1 |
| 2022 | D+43.6Earl Blumenauer | — | — |
| 2020 | D+49.5Earl Blumenauer | D+47.0 | — |
| 2018 | D+52.8Earl Blumenauer | — | — |
“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.
Senate and governor results are in the Office selector at the top of this page.
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.
Centered on Portland, Oregon's 3rd District recorded a 45.6-point Democratic presidential margin in 2024, reflecting a dense, highly educated urban electorate that has voted reliably left of center for decades.
Across the recorded series it reached a Democratic high of 47.0 points in 2020 and a Republican high of 67.3 points in 1904. Between 2020 and 2024 the district moved 1.4 points toward the Republican candidate; the 2024 margin was 45.6 points.
A population of 706,099, a 65% non-Hispanic-white share, and a median household income of $89,326 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 1 and Congressional District 7.
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 →
Oregon 3rd Congressional District. Akashic. https://akashic.app/cd/4103/. Accessed May 20, 2026. License: CC BY 4.0.