59718 leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 86% of adults in 59718 typically vote, above the U.S. average of about 62%. Among adults in 59718, ~46% vote Democratic, ~40% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How 59718 compares
Among zip codes within 15 miles, 59718 leans more Democratic than 2 of 3 neighbors.
59718 runs about 26 points more Democratic than Montana as a whole. Montana leans Republican overall, while 59718 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 59718. The east side runs the most Democratic (D+24) and the northwest side runs the most Republican (R+20), a spread of about 45 points.
Why 59718 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 59718, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 58% of adults in 59718 hold a bachelor's degree, about 29 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 40% of adults in 59718 have never been married, above 88% of zip codes. 59718 runs against the grain of Montana, a Democratic-leaning pocket in a Republican-leaning state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 59718, MT sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 59718 looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in 59718 have completed high school, about 8 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.