- Lead
- 287
- Total
- 4,175
- vs nation
- D+8.3
Montana 15th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 839
- Total
- 4,416
- vs nation
- D+14.5
- Lead
- 723
- Total
- 3,538
- vs nation
- D+18.3
- Lead
- 971
- Total
- 3,471
- vs nation
- D+24.1
- Lead
- 1,508
- Total
- 3,909
- vs nation
- D+31.3
- Lead
- 728
- Total
- 3,274
- vs nation
- D+24.7
- Lead
- 472
- Total
- 2,956
- vs nation
- D+15.4
- Lead
- 941
- Total
- 3,139
- vs nation
- D+21.5
Key facts
- 2024 presidential margin
- D+6.9MIT Election Lab
- Population
- 10,8382024 5-year
- Population density
- 4.5 / sq mi2024 5-year · TIGER/Line
- Land area
- 2,408 sq miTIGER/Line
- Median household income
- $48,9722024 5-year
- White (non-Hispanic)
- 33.2%2024 5-year
- Black
- 0.1%2024 5-year
- Hispanic / Latino
- 3.7%2024 5-year
- Peak Democratic margin
- D+73.7 in 1936MIT Election Lab
- Most similar
- State House District 32, MT · twin score 93.2
presidential history
Party record book
Montana 15th State House 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
85.8%
1,883 votes · D+73.7 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 83.3%
Republican
Donald Trump2024
44.6%
1,863 votes · D+6.9 · modeled estimate
Runner-up · Ronald Reagan, 1980 · 39.3%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
2,617votes
66.9% of the vote · D+38.6 · modeled estimate
Runner-up · Joe Biden, 2020 · 2,572 votes
Republican
Donald Trump2024
1,863votes
44.6% of the vote · D+6.9 · modeled estimate
Runner-up · Donald Trump, 2020 · 1,733 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
James M. Cox1920
+91.8pts D vs U.S.
Place D+65.6 · U.S. R+26.2 · modeled estimate
Runner-up · Al Smith, 1928 · +57.9 pts
Republican
Donald Trump2024
−8.3pts R vs U.S.
Place D+6.9 · U.S. R+1.5 · modeled estimate
Runner-up · Donald Trump, 2020 · −14.5 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Montana 15th State House District sits in the Northern Rockies. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 73.7 points in 1936. Between 2020 and 2024 the district moved 12.1 points toward the Republican candidate; the 2024 margin was 6.9 points.
A population of 10,838, a 33% non-Hispanic-white share, and a median household income of $48,972 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 32 and State House District 31.
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 →
Montana 15th State House District. Akashic. https://akashic.app/sld-lower/30015/. Accessed May 20, 2026. License: CC BY 4.0.