- Lead
- 10,710
- Total
- 30,892
- vs nation
- D+36.1
Oregon 30th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 11,806
- Total
- 33,350
- vs nation
- D+30.9
- Lead
- 7,322
- Total
- 27,507
- vs nation
- D+24.5
- Lead
- 4,414
- Total
- 23,930
- vs nation
- D+14.6
- Lead
- 5,516
- Total
- 23,889
- vs nation
- D+15.8
- Lead
- 1,648
- Total
- 23,280
- vs nation
- D+9.5
- Lead
- 656
- Total
- 18,778
- vs nation
- D+3.0
- Lead
- 1,310
- Total
- 16,265
- vs nation
- R+0.5
Key facts
- 2024 presidential margin
- D+34.7MIT Election Lab
- Population
- 70,5182024 5-year
- Population density
- 2,026 / sq mi2024 5-year · TIGER/Line
- Land area
- 34.8 sq miTIGER/Line
- Median household income
- $106,1522024 5-year
- White (non-Hispanic)
- 56.0%2024 5-year
- Black
- 2.8%2024 5-year
- Hispanic / Latino
- 18.0%2024 5-year
- Peak Democratic margin
- D+35.4 in 2020MIT Election Lab
- Peak Republican margin
- R+52.1 in 1904MIT Election Lab
- Most similar
- State House District 36, OR · twin score 94.6
presidential history
Party record book
Oregon 30th 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
Joe Biden2020
65.7%
21,913 votes · D+35.4 · modeled estimate
Runner-up · Kamala Harris, 2024 · 65.2%
Republican
Theodore Roosevelt1904
69.0%
229 votes · R+52.1 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 63.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
21,913votes
65.7% of the vote · D+35.4 · modeled estimate
Runner-up · Kamala Harris, 2024 · 20,137 votes
Republican
George W. Bush2004
10,653votes
45.8% of the vote · D+7.1 · modeled estimate
Runner-up · Donald Trump, 2020 · 10,107 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
Kamala Harris2024
+36.1pts D vs U.S.
Place D+34.7 · U.S. R+1.5 · modeled estimate
Runner-up · Joe Biden, 2020 · +30.9 pts
Republican
Benjamin Harrison1892
+42.0pts R vs U.S.
Place R+40.3 · U.S. D+1.7 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +32.4 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 | D | 67.2%21,795 | 32.8%10,655 | 32,450 |
| 2020 | D | 67.1%24,178 | 32.9%11,846 | 36,024 |
With a 2024 presidential margin of D+34.7, this Portland-area district ranks among the state's most one-sided constituencies, where general-election outcomes are typically decided well before November.
Across the recorded series it reached a Democratic high of 35.4 points in 2020 and a Republican high of 52.1 points in 1904. Between 2020 and 2024 the district moved 0.7 points toward the Republican candidate; the 2024 margin was 34.7 points.
A population of 70,518, a 56% non-Hispanic-white share, and a median household income of $106,152 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 36 and State House District 35.
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 30th State House District. Akashic. https://akashic.app/sld-lower/41030/. Accessed May 20, 2026. License: CC BY 4.0.