- Lead
- 1,562
- Total
- 30,269
- vs nation
- D+6.6
Oregon 21st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,380
- Total
- 32,871
- vs nation
- D+2.8
- Lead
- 343
- Total
- 27,853
- vs nation
- R+0.9
- Lead
- 597
- Total
- 24,436
- vs nation
- R+1.4
- Lead
- 2,088
- Total
- 25,434
- vs nation
- D+0.9
- Lead
- 925
- Total
- 26,148
- vs nation
- R+1.1
- Lead
- 379
- Total
- 23,072
- vs nation
- R+2.2
- Lead
- 1,585
- Total
- 22,016
- vs nation
- R+1.3
Key facts
- 2024 presidential margin
- D+5.2MIT Election Lab
- Population
- 71,2672024 5-year
- Population density
- 4,720 / sq mi2024 5-year · TIGER/Line
- Land area
- 15.1 sq miTIGER/Line
- Median household income
- $74,0142024 5-year
- White (non-Hispanic)
- 62.7%2024 5-year
- Black
- 1.6%2024 5-year
- Hispanic / Latino
- 26.0%2024 5-year
- Peak Democratic margin
- D+31.0 in 1936MIT Election Lab
- Peak Republican margin
- R+44.4 in 1904MIT Election Lab
- Most similar
- State House District 19, OR · twin score 87.7
presidential history
Party record book
Oregon 21st State House 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
65.1%
6,859 votes · D+30.7 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 61.1%
Republican
Dwight D. Eisenhower1952
67.3%
5,665 votes · R+35.4 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · 65.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
17,002votes
51.7% of the vote · D+7.2 · modeled estimate
Runner-up · Kamala Harris, 2024 · 15,348 votes
Republican
Donald Trump2020
14,622votes
44.5% of the vote · D+7.2 · modeled estimate
Runner-up · Donald Trump, 2024 · 13,786 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
+11.0pts D vs U.S.
Place D+4.9 · U.S. R+6.1 · modeled estimate
Runner-up · George McGovern, 1972 · +9.3 pts
Republican
Benjamin Harrison1892
+31.2pts R vs U.S.
Place R+29.5 · U.S. D+1.7 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +24.8 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 | 47.2%14,329 | 52.8%16,017 | 30,346 |
| 2020 | R | 49.5%15,716 | 50.5%16,059 | 31,775 |
Oregon 21st State House District sits in the Pacific Northwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 31.0 points in 1936 and a Republican high of 44.4 points in 1904. Between 2020 and 2024 the district moved 2.1 points toward the Republican candidate; the 2024 margin was 5.2 points.
A population of 71,267, a 63% non-Hispanic-white share, and a median household income of $74,014 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 19 and State House District 22.
The state-house 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 21st State House District. Akashic. https://akashic.app/sld-lower/41021/. Accessed May 20, 2026. License: CC BY 4.0.