Prairie County is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 60% of adults in Prairie County typically vote, near the U.S. average of about 62%. Among adults in Prairie County, ~10% vote Democratic, ~50% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How Prairie County compares
Prairie County sits in a sparsely populated area with few comparable counties nearby.
Prairie County runs about 48 points more Republican than Montana as a whole.
Why Prairie County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Prairie County. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Prairie County, MT sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Prairie County looks the way it does
Turnout in Prairie County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Dawson County, MT R+55
- Custer County, MT R+43
- Wibaux County, MT R+75
- Fallon County, MT R+71
- McCone County, MT R+72
- Golden Valley County, ND R+69
- Richland County, MT R+62
- Carter County, MT R+78
- Garfield County, MT R+87
- Rosebud County, MT R+20
Counties with Similar Populations
- Foard County, TX R+69
- Camas County, ID R+72
- Motley County, TX R+75
- Glasscock County, TX R+85
- Sioux County, NE R+79
- Garfield County, MT R+87
- Alpine County, CA D+36
- Billings County, ND R+67
- Wibaux County, MT R+75
- Skagway Municipality, AK R+23
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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.