Mineral County is a Republican stronghold. About 23% of voters here vote Democratic and 77% Republican.
About 72% of adults in Mineral County typically vote, above the U.S. average of about 62%. Among adults in Mineral County, ~16% vote Democratic, ~56% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Mineral County compares
Among counties within 50 miles, Mineral County leans more Republican than 2 of 3 neighbors.
Mineral County runs about 33 points more Republican than Montana as a whole.
Politics vary noticeably by city within Mineral County. The west side is the most Republican-leaning (R+61) and the north side is the least Republican-leaning (R+50), a spread of about 10 points.
Why Mineral County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Mineral County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 3% of residents in Mineral County live in densely developed areas, about 10 points below the Montana average of 13%.
Population density and Republican lean
Places with low population density tend to lean Republican; Mineral County, MT sits in the bottom tenth nationally on this measure.
Why turnout in Mineral County looks the way it does
Homeowners vote more often than renters. About 81% of households in Mineral County own their home, about 6 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Sanders County, MT R+54
- Missoula County, MT D+16
- Lake County, MT R+21
- Shoshone County, ID R+43
- Ravalli County, MT R+43
- Clearwater County, ID R+64
- Flathead County, MT R+32
- Benewah County, ID R+60
- Granite County, MT R+38
- Lewis County, ID R+60
Counties with Similar Populations
- Phillips County, CO R+53
- Schley County, GA R+60
- Cameron County, PA R+47
- Hickman County, KY R+61
- Mineral County, NV R+40
- Morrill County, NE R+64
- Florence County, WI R+41
- Oneida County, ID R+76
- Lincoln County, NV R+66
- Dewey County, OK R+78
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.