- Lead
- 13,589
- Total
- 41,882
- vs nation
- R+31.0
Oregon 55th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 13,534
- Total
- 42,438
- vs nation
- R+36.3
- Lead
- 12,869
- Total
- 34,537
- vs nation
- R+39.4
- Lead
- 11,589
- Total
- 30,524
- vs nation
- R+41.8
- Lead
- 10,217
- Total
- 30,615
- vs nation
- R+40.6
- Lead
- 14,497
- Total
- 31,352
- vs nation
- R+43.8
- Lead
- 11,700
- Total
- 26,215
- vs nation
- R+45.2
- Lead
- 6,175
- Total
- 20,237
- vs nation
- R+39.0
Key facts
- 2024 presidential margin
- R+32.4MIT Election Lab
- Population
- 70,0362024 5-year
- Population density
- 11 / sq mi2024 5-year · TIGER/Line
- Land area
- 6,297 sq miTIGER/Line
- Median household income
- $69,5802024 5-year
- White (non-Hispanic)
- 80.4%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 9.3%2024 5-year
- Peak Democratic margin
- D+31.9 in 1936MIT Election Lab
- Peak Republican margin
- R+52.8 in 1904MIT Election Lab
- Most similar
- State House District 60, CO · twin score 95.3
presidential history
Party record book
Oregon 55th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1884) · 36 presidential cycles · 36 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
63.9%
4,482 votes · D+31.9 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 55.4%
Republican
Ronald Reagan1984
73.9%
14,720 votes · R+48.1 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · 73.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
13,923votes
32.8% of the vote · R+31.9 · modeled estimate
Runner-up · Kamala Harris, 2024 · 13,544 votes
Republican
Donald Trump2020
27,457votes
64.7% of the vote · R+31.9 · modeled estimate
Runner-up · Donald Trump, 2024 · 27,133 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
+7.6pts D vs U.S.
Place D+31.9 · U.S. D+24.3 · modeled estimate
Runner-up · William J. Bryan, 1896 · +7.2 pts
Republican
George W. Bush2000
+45.2pts R vs U.S.
Place R+44.6 · U.S. D+0.5 · modeled estimate
Runner-up · George W. Bush, 2004 · +43.8 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.
Covering rural eastern Oregon, District 55 recorded a 32.4-point Republican presidential margin in 2024, making it among the most one-sided state house seats in a state whose politics are otherwise dominated by its urban west side.
Across the recorded series it reached a Democratic high of 31.9 points in 1936 and a Republican high of 52.8 points in 1904. Between 2020 and 2024 the district moved 0.6 points toward the Republican candidate; the 2024 margin was 32.4 points.
A population of 70,036, a 80% non-Hispanic-white share, and a median household income of $69,580 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 60 and State House District 4.
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 55th State House District. Akashic. https://akashic.app/sld-lower/41055/. Accessed May 20, 2026. License: CC BY 4.0.