Judith Basin County is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 83% of adults in Judith Basin County typically vote, above the U.S. average of about 62%. Among adults in Judith Basin County, ~16% vote Democratic, ~67% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Judith Basin County compares
Judith Basin County sits in a sparsely populated area with few comparable counties nearby.
Judith Basin County runs about 42 points more Republican than Montana as a whole.
Why Judith Basin 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 Judith Basin County, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in Judith Basin County live in densely developed areas, about 11 points below the Montana average of 13%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Judith Basin 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 Judith Basin County looks the way it does
Turnout in Judith Basin 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
- Fergus County, MT R+50
- Wheatland County, MT R+66
- Meagher County, MT R+58
- Cascade County, MT R+25
- Chouteau County, MT R+24
- Golden Valley County, MT R+69
- Broadwater County, MT R+54
- Petroleum County, MT R+69
- Sweet Grass County, MT R+54
- Musselshell County, MT R+64
Counties with Similar Populations
- Keweenaw County, MI Even
- Jeff Davis County, TX R+51
- Gilliam County, OR R+48
- Clark County, KS R+73
- Wheatland County, MT R+66
- Worth County, MO R+64
- Haines Borough, AK R+17
- Menard County, TX R+53
- Stanton County, KS R+48
- Liberty County, MT R+56
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.