Birney Day School leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 54% of adults in Birney Day School typically vote, below the U.S. average of about 62%. Among adults in Birney Day School, ~31% vote Democratic, ~23% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How Birney Day School compares
Among cities within 25 miles, Birney Day School leans more Democratic than 3 of 4 neighbors.
Birney Day School runs about 34 points more Democratic than Montana as a whole. Montana leans Republican overall, while Birney Day School is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Birney Day School. The northwest side runs the most Democratic (D+53) and the southeast side runs the most Republican (R+72), a spread of about 125 points.
Why Birney Day School leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Birney Day School, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 42% of adults in Birney Day School have never been married, modestly above similar-sized cities (around 30%). Birney Day School runs against the grain of Montana, a Democratic-leaning pocket in a Republican-leaning state.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Birney Day School, MT sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Birney Day School looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Birney Day School is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 15 points below the Montana average of 62%. Renters vote less often than owners, and about 62% of households in Birney Day School rent, compared to around 37% in nearby cities. High food insecurity lines up with lower turnout, and about 37% of adults in Birney Day School report food insecurity, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Birney, MT R+8
- Ashland, MT R+5
- Lame Deer, MT D+40
- Otter, MT R+67
- Busby, MT D+9
- Epsie, MT R+72
- Decker, MT Even
- Kirby, MT D+7
- Colstrip, MT R+52
- Sonnette, MT R+72
Cities with Similar Populations
- Rainbow Lake, NY D+20
- South Worcester, NY R+36
- Reece, KS R+70
- Taft, SC D+43
- Tague, WV R+62
- Meighen, WV R+62
- Mellenville, NY R+10
- Rockvale, KY R+63
- Melrose, PA R+49
- White Rock, SC R+34
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Montana Secretary of State, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.