- Lead
- 769
- Total
- 8,402
- vs nation
- D+10.6
Montana 8th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 1,770
- Total
- 9,026
- vs nation
- D+15.2
- Lead
- 1,446
- Total
- 7,640
- vs nation
- D+16.8
- Lead
- 1,764
- Total
- 7,035
- vs nation
- D+21.2
- Lead
- 2,605
- Total
- 7,831
- vs nation
- D+26.0
- Lead
- 910
- Total
- 7,025
- vs nation
- D+15.4
- Lead
- 446
- Total
- 6,360
- vs nation
- D+6.5
- Lead
- 1,411
- Total
- 6,456
- vs nation
- D+13.3
Key facts
- 2024 presidential margin
- D+9.2MIT Election Lab
- Population
- 21,7642024 5-year
- Population density
- 4.3 / sq mi2024 5-year · TIGER/Line
- Land area
- 5,039 sq miTIGER/Line
- Median household income
- $49,9682024 5-year
- White (non-Hispanic)
- 32.1%2024 5-year
- Black
- 0.1%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+56.4 in 1936MIT Election Lab
- Peak Republican margin
- R+21.5 in 1920MIT Election Lab
- Most similar
- State Senate District 16, MT · twin score 93.9
presidential history
Party record book
Montana 8th State Senate 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
77.4%
3,669 votes · D+56.4 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 73.7%
Republican
Warren G. Harding1920
59.5%
1,318 votes · R+21.5 · modeled estimate
Runner-up · Ronald Reagan, 1980 · 52.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
5,278votes
58.5% of the vote · D+19.6 · modeled estimate
Runner-up · Barack Obama, 2008 · 5,092 votes
Republican
Donald Trump2024
3,656votes
43.5% of the vote · D+9.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 3,508 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
+32.1pts D vs U.S.
Place D+56.4 · U.S. D+24.3 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · +31.4 pts
Republican
Ronald Reagan1980
+6.4pts R vs U.S.
Place R+16.1 · U.S. R+9.7 · modeled estimate
Runner-up · Gerald Ford, 1976 · −4.1 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Montana 8th State Senate District sits in the Northern Rockies. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 56.4 points in 1936 and a Republican high of 21.5 points in 1920. Between 2020 and 2024 the district moved 10.5 points toward the Republican candidate; the 2024 margin was 9.2 points.
A population of 21,764, a 32% non-Hispanic-white share, and a median household income of $49,968 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 16 and State Senate District 21.
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.
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 8th State Senate District. Akashic. https://akashic.app/sld-upper/30008/. Accessed May 20, 2026. License: CC BY 4.0.