Rosebud County leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 74% of adults in Rosebud County typically vote, above the U.S. average of about 62%. Among adults in Rosebud County, ~30% vote Democratic, ~44% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Rosebud County compares
Rosebud County sits in a sparsely populated area with few comparable counties nearby.
Politically, Rosebud County sits close to the rest of Montana.
Politics vary noticeably by city within Rosebud County. The south side runs the most Democratic (D+50) and the northeast side runs the most Republican (R+74), a spread of about 124 points.
Why Rosebud County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Rosebud County. The lean here lands roughly where demographic data alone would predict.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Rosebud County, MT sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Rosebud County looks the way it does
Turnout in Rosebud 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
- Treasure County, MT R+66
- Big Horn County, MT Even
- Custer County, MT R+43
- Powder River County, MT R+72
- Sheridan County, WY R+47
- Prairie County, MT R+68
- Yellowstone County, MT R+25
- Musselshell County, MT R+64
- Garfield County, MT R+87
- Carter County, MT R+78
Counties with Similar Populations
- Keith County, NE R+60
- Custer County, SD R+53
- Tyler County, WV R+61
- Nevada County, AR R+27
- Mercer County, ND R+65
- Coffey County, KS R+58
- Perry County, TN R+73
- Butler County, NE R+62
- Atkinson County, GA R+57
- Houston County, TN R+64
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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.