Fort Harrison leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 89% of adults in Fort Harrison typically vote, above the U.S. average of about 62%. Among adults in Fort Harrison, ~37% vote Democratic, ~52% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How Fort Harrison compares
Among cities within 25 miles, Fort Harrison leans more Republican than 2 of 17 neighbors.
Fort Harrison runs about 5 points more Democratic than Montana as a whole.
Politics vary noticeably by neighborhood within Fort Harrison. The northwest side is the most split-leaning (R+35) and the southeast side is the least split-leaning (R+3), a spread of about 33 points.
Why Fort Harrison leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Fort Harrison. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Fort Harrison, MT sits in the top 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 Fort Harrison looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Fort Harrison is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 92% of households in Fort Harrison own their home, about 17 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Helena West Side, MT D+14
- Helena Valley West Central, MT R+16
- Helena, MT D+17
- Helena Valley Northwest, MT R+38
- Helena Valley Northeast, MT R+37
- Helena Valley Southeast, MT R+35
- Rimini, MT R+16
- Clancy, MT R+26
- Montana City, MT R+28
- Marysville, MT R+42
Cities with Similar Populations
- Gilcrest, CO R+56
- Tanner Williams, AL R+84
- Derby Center, VT R+2
- Vaudreuil, WI D+26
- Netarts, OR D+5
- Barlow, KY R+65
- Howland, ME R+39
- Central City, CO D+10
- Avon, IL R+44
- Boykins, VA R+9
All Local Stats
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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.