- Lead
- 11,012
- Total
- 71,216
- vs nation
- D+16.9
Oregon 10th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 12,176
- Total
- 75,556
- vs nation
- D+11.7
- Lead
- 5,229
- Total
- 62,497
- vs nation
- D+6.3
- Lead
- 5,972
- Total
- 54,759
- vs nation
- D+7.1
- Lead
- 9,032
- Total
- 57,089
- vs nation
- D+8.5
- Lead
- 2,673
- Total
- 56,956
- vs nation
- D+7.2
- Lead
- 2,808
- Total
- 48,685
- vs nation
- D+5.2
- Lead
- 6,352
- Total
- 45,973
- vs nation
- D+5.3
Key facts
- 2024 presidential margin
- D+15.5MIT Election Lab
- Population
- 142,3032024 5-year
- Population density
- 2,173 / sq mi2024 5-year · TIGER/Line
- Land area
- 65.5 sq miTIGER/Line
- Median household income
- $85,5142024 5-year
- White (non-Hispanic)
- 69.2%2024 5-year
- Black
- 1.2%2024 5-year
- Hispanic / Latino
- 18.3%2024 5-year
- Peak Democratic margin
- D+38.8 in 1964MIT Election Lab
- Peak Republican margin
- R+33.0 in 1904MIT Election Lab
- Most similar
- State Senate District 8, OR · twin score 84.9
presidential history
Party record book
Oregon 10th State Senate 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
Lyndon B. Johnson1964
69.2%
15,474 votes · D+38.8 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 64.0%
Republican
Dwight D. Eisenhower1952
63.1%
10,669 votes · R+27.0 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · 59.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
42,442votes
56.2% of the vote · D+16.1 · modeled estimate
Runner-up · Kamala Harris, 2024 · 39,756 votes
Republican
Donald Trump2020
30,266votes
40.1% of the vote · D+16.1 · modeled estimate
Runner-up · Donald Trump, 2024 · 28,744 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
William J. Bryan1896
+20.4pts D vs U.S.
Place D+14.3 · U.S. R+6.1 · modeled estimate
Runner-up · George McGovern, 1972 · +17.9 pts
Republican
Benjamin Harrison1892
+20.3pts R vs U.S.
Place R+18.7 · U.S. D+1.7 · a third-party candidate carried the Place · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · +16.2 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 46.8%30,535 | 53.2%34,647 | 65,182 |
| 2020 | R | 48.8%32,664 | 51.2%34,214 | 66,878 |
Oregon Senate District 10 sits within the Portland metro area, where a dense, younger, and highly educated population has produced consistent double-digit Democratic presidential margins across recent election cycles.
Across the recorded series it reached a Democratic high of 38.8 points in 1964 and a Republican high of 33.0 points in 1904. Between 2020 and 2024 the district moved 0.7 points toward the Republican candidate; the 2024 margin was 15.5 points.
A population of 142,303, a 69% non-Hispanic-white share, and a median household income of $85,514 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 8 and Legislative (Senate) District 49.
The state-senate 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.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
Oregon 10th State Senate District. Akashic. https://akashic.app/sld-upper/41010/. Accessed May 20, 2026. License: CC BY 4.0.