- Lead
- 20,275
- Total
- 88,788
- vs nation
- D+24.3
Oregon 27th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 17,143
- Total
- 87,535
- vs nation
- D+15.1
- Lead
- 4,474
- Total
- 68,455
- vs nation
- D+4.4
- Lead
- 2,206
- Total
- 56,375
- vs nation
- D+0.1
- Lead
- 5,728
- Total
- 55,216
- vs nation
- D+3.1
- Lead
- 1,758
- Total
- 50,537
- vs nation
- R+1.0
- Lead
- 2,832
- Total
- 39,529
- vs nation
- R+7.7
- Lead
- 227
- Total
- 31,276
- vs nation
- R+7.8
Key facts
- 2024 presidential margin
- D+22.8MIT Election Lab
- Population
- 140,3262024 5-year
- Population density
- 248 / sq mi2024 5-year · TIGER/Line
- Land area
- 565 sq miTIGER/Line
- Median household income
- $95,2562024 5-year
- White (non-Hispanic)
- 82.3%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 9.3%2024 5-year
- Peak Democratic margin
- D+60.2 in 1936MIT Election Lab
- Peak Republican margin
- R+19.9 in 1924MIT Election Lab
- Most similar
- State Senate District 13, OR · twin score 92.0
presidential history
Party record book
Oregon 27th State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1920–2024 · 27 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
77.4%
3,335 votes · D+60.2 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 73.3%
Republican
Dwight D. Eisenhower1952
58.6%
3,527 votes · R+17.6 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 57.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
52,934votes
59.6% of the vote · D+22.8 · modeled estimate
Runner-up · Joe Biden, 2020 · 51,016 votes
Republican
Donald Trump2020
33,873votes
38.7% of the vote · D+19.6 · modeled estimate
Runner-up · Donald Trump, 2024 · 32,659 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
Franklin D. Roosevelt1936
+35.9pts D vs U.S.
Place D+60.2 · U.S. D+24.3 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1940 · +30.3 pts
Republican
Bob Dole1996
+7.8pts R vs U.S.
Place D+0.7 · U.S. D+8.5 · modeled estimate
Runner-up · George W. Bush, 2000 · +7.7 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Oregon 27th State Senate District sits in the Pacific Northwest. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 60.2 points in 1936 and a Republican high of 19.9 points in 1924. Between 2020 and 2024 the district moved 3.3 points toward the Democratic candidate; the 2024 margin was 22.8 points.
A population of 140,326, a 82% non-Hispanic-white share, and a median household income of $95,256 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 13 and State Senate District 16.
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 27th State Senate District. Akashic. https://akashic.app/sld-upper/41027/. Accessed May 20, 2026. License: CC BY 4.0.