- Lead
- 1,761
- Total
- 7,001
- vs nation
- R+23.7
Montana 86th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 1,511
- Total
- 6,843
- vs nation
- R+26.5
- Lead
- 1,437
- Total
- 5,572
- vs nation
- R+27.9
- Lead
- 989
- Total
- 5,510
- vs nation
- R+21.8
- Lead
- 360
- Total
- 5,549
- vs nation
- R+13.8
- Lead
- 1,110
- Total
- 4,898
- vs nation
- R+20.2
- Lead
- 1,194
- Total
- 4,229
- vs nation
- R+28.8
- Lead
- 281
- Total
- 4,158
- vs nation
- R+15.3
Key facts
- 2024 presidential margin
- R+25.2MIT Election Lab
- Population
- 11,0252024 5-year
- Population density
- 339 / sq mi2024 5-year · TIGER/Line
- Land area
- 32.5 sq miTIGER/Line
- Median household income
- $58,3232024 5-year
- White (non-Hispanic)
- 89.0%2024 5-year
- Black
- 0.3%2024 5-year
- Hispanic / Latino
- 3.8%2024 5-year
- Peak Democratic margin
- D+84.0 in 1896MIT Election Lab
- Peak Republican margin
- R+28.2 in 2000MIT Election Lab
- Most similar
- State House District 88, MT · twin score 94.5
presidential history
Party record book
Montana 86th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1896–2024 · 33 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
William J. Bryan1896
92.0%
459 votes · D+84.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 65.9%
Republican
Ronald Reagan1984
61.2%
1,825 votes · R+23.4 · modeled estimate
Runner-up · Donald Trump, 2024 · 61.1%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
2,588votes
37.8% of the vote · R+22.1 · modeled estimate
Runner-up · Barack Obama, 2008 · 2,533 votes
Republican
Donald Trump2024
4,278votes
61.1% of the vote · R+25.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 4,099 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
+90.0pts D vs U.S.
Place D+84.0 · U.S. R+6.1 · modeled estimate
Runner-up · William J. Bryan, 1900 · +33.5 pts
Republican
George W. Bush2000
+28.8pts R vs U.S.
Place R+28.2 · U.S. D+0.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +27.9 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.
Its Republican presidential margin was R+25.2 in 2024 and R+6.5 in 2008. About 640 residents lived here as of the 2024 ACS 5-year.
Across the recorded series it reached a Democratic high of 84.0 points in 1896 and a Republican high of 28.2 points in 2000. Between 2020 and 2024 the district moved 3.1 points toward the Republican candidate; the 2024 margin was 25.2 points.
A population of 11,025, a 89% non-Hispanic-white share, and a median household income of $58,323 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 88 and State House District 55.
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 86th State House District. Akashic. https://akashic.app/sld-lower/30086/. Accessed May 20, 2026. License: CC BY 4.0.