St. Marie is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 58% of adults in St. Marie typically vote, near the U.S. average of about 62%. Among adults in St. Marie, ~11% vote Democratic, ~47% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How St. Marie compares
Among cities within 25 miles, St. Marie leans more Republican than 4 of 6 neighbors.
St. Marie runs about 42 points more Republican than Montana as a whole.
Politics vary noticeably by neighborhood within St. Marie. The west side is the most Republican-leaning (R+63) and the east side is the least Republican-leaning (R+21), a spread of about 42 points.
Why St. Marie leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in St. Marie. 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; St. Marie, 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 St. Marie looks the way it does
Areas with low high-school completion turn out at lower rates. About 85% of adults in St. Marie have completed high school, below 78% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Vandalia, MT R+63
- Glasgow, MT R+45
- Larslan, MT R+24
- Tampico, MT R+61
- Nashua, MT R+56
- Hinsdale, MT R+63
- Lustre, MT R+21
- Richland, MT R+57
- Frazer, MT R+21
- Glentana, MT R+65
Cities with Similar Populations
- Zebulon, KY R+68
- King, TX R+73
- Imalone, WI R+43
- Mentow, VA R+53
- Millville, KY R+36
- Dinosaur, CO R+71
- Detroit, KS R+63
- Groos, MI R+34
- Eldean, OH R+46
- Pittsburg, IN R+57
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.