Oregon 12th 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
59.8%
11,384 votes · D+19.7 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 54.6%
Republican
Dwight D. Eisenhower1952
69.7%
12,726 votes · R+39.9 · modeled estimate
Runner-up · Herbert Hoover, 1928 · 69.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
34,706votes
43.9% of the vote · R+8.6 · modeled estimate
Runner-up · Kamala Harris, 2024 · 33,477 votes
Republican
Donald Trump2024
41,864votes
53.4% of the vote · R+10.7 · modeled estimate
Runner-up · Donald Trump, 2020 · 41,463 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
+1.0pts D vs U.S.
Place R+5.1 · U.S. R+6.1 · modeled estimate
Runner-up · James M. Cox, 1920 · −2.7 pts
Republican
Benjamin Harrison1892
+30.0pts R vs U.S.
Place R+28.4 · U.S. D+1.7 · modeled estimate
Runner-up · Dwight D. Eisenhower, 1952 · +29.1 pts
current representation
Current officeholders
RBruce StarrState Senate · 12
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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.
Source · Akashic county-allocated estimate from certified county returns, House; not precinct-counted.
Year
Vote lead
Democratic
Republican
Total
2024
R
45.7%33,271
54.3%39,465
72,736
2020
R
48.8%35,688
51.2%37,411
73,099
Its Republican presidential margin was R+10.7 in 2024 and R+6.0 in 2008. The district had about 193,000 residents, 77.1% White alone in the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 19.7 points in 1964 and a Republican high of 46.7 points in 1904. Between 2020 and 2024 the district moved 2.2 points toward the Republican candidate; the 2024 margin was 10.7 points.
A population of 141,526, a 76% non-Hispanic-white share, and a median household income of $86,741 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 6 and State Senate District 23.
Akashic
Political twins — state-senate districts
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.
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Oregon 12th State Senate District. Akashic. https://akashic.app/sld-upper/41012/. Accessed May 20, 2026. License: CC BY 4.0.
How did Oregon 12th State Senate District vote in 2024?
In 2024, Oregon 12th State Senate District voted Republican by 10.7 points (R+10.7), carried by the Republican candidate. Out of 78,337 votes cast, 33,477 went Democratic and 41,864 went Republican.
When did Oregon 12th State Senate District last vote Democratic?
The most recent presidential election in which Oregon 12th State Senate District voted Democratic was 1964.
How many people live in Oregon 12th State Senate District?
Oregon 12th State Senate District has a population of 141,526 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Oregon 12th State Senate District?
Median household income in Oregon 12th State Senate District is $86,741 — above the national median of $80,734. The Oregon state median is $83,011.
What is the political history of Oregon 12th State Senate District?
Akashic tracks 38 presidential elections in Oregon 12th State Senate District from 1876 to 2024. Of those, 3 went Democratic and 34 went Republican.