Beaverhead County leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 83% of adults in Beaverhead County typically vote, above the U.S. average of about 62%. Among adults in Beaverhead County, ~24% vote Democratic, ~59% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Beaverhead County compares
Beaverhead County runs about 22 points more Republican than Montana as a whole.
Politics vary noticeably by city within Beaverhead County. The southwest side is the most Republican-leaning (R+63) and the east side is the least Republican-leaning (R+36), a spread of about 27 points.
Why Beaverhead County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Beaverhead County. The lean here lands roughly where demographic data alone would predict.
Local retail density and voter turnout
Places with dense local retail within a mile tend to turn out at a higher rate; Beaverhead County, MT sits in the top tenth nationally on this measure. Nearby retail does not change how people vote; it reflects how urban and built-up a place is.
Why turnout in Beaverhead County looks the way it does
Turnout in Beaverhead 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
- Madison County, MT R+46
- Silver Bow County, MT Even
- Lemhi County, ID R+61
- Deer Lodge County, MT R+18
- Clark County, ID R+65
- Jefferson County, MT R+38
- Gallatin County, MT D+6
- Powell County, MT R+48
- Granite County, MT R+38
- Broadwater County, MT R+54
Counties with Similar Populations
- Charles Mix County, SD R+39
- Emmet County, IA R+37
- Clear Creek County, CO D+21
- Deer Lodge County, MT R+18
- Nowata County, OK R+61
- Todd County, SD D+57
- Pipestone County, MN R+48
- Rice County, KS R+54
- Hamilton County, NE R+61
- Latimer County, OK R+66
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.