59043 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 49% of adults in 59043 typically vote, below the U.S. average of about 62%. Among adults in 59043, ~35% vote Democratic, ~14% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How 59043 compares
59043 runs about 63 points more Democratic than Montana as a whole. Montana leans Republican overall, while 59043 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 59043. The north side is the most Democratic-leaning (D+54) and the southwest side is the least Democratic-leaning (D+31), a spread of about 23 points.
Why 59043 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 59043, not a ranked or complete list of what matters most.
59043 votes against the grain of Montana. Montana leans Republican overall, while 59043 runs about 63 points more Democratic. A high never-married share predicts Democratic voting, and about 56% of adults in 59043 have never been married, above 97% of zip codes.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 59043, MT sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 59043 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 59043 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 41%, about 21 points below the Montana average of 62%. Renters vote less often than owners, and about 46% of households in 59043 rent, about 21 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 45% of adults in 59043 report food insecurity, in the top fraction of zip codes. 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.