Mountain Home leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 63% of adults in Mountain Home typically vote, near the U.S. average of about 62%. Among adults in Mountain Home, ~18% vote Democratic, ~45% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Mountain Home compares
Among cities within 25 miles, Mountain Home leans more Republican than 1 of 7 neighbors.
Mountain Home runs about 8 points more Republican than Idaho as a whole.
Politics vary noticeably by neighborhood within Mountain Home. The northeast side is the most Republican-leaning (R+59) and the east side is the least Republican-leaning (R+37), a spread of about 22 points.
Why Mountain Home leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Mountain Home, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 85% of residents in Mountain Home drive to work alone, about 11 points above the U.S. average of 74%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Mountain Home, ID 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 Mountain Home looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Mountain Home is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mountain Home AFB, ID R+14
- Orchard, ID R+54
- Hammett, ID R+62
- Pine, ID R+57
- Grand View, ID R+71
- Bruneau, ID R+66
- Glenns Ferry, ID R+58
- Prairie, ID R+55
- King Hill, ID R+56
- Hill City, ID R+65
Cities with Similar Populations
- Troy, MO R+45
- Springtown, TX R+69
- Montgomery, IL D+14
- Somerville, NJ D+12
- Bayville, NJ R+38
- Tukwila, WA D+38
- Willow Spring, NC R+24
- White Oak, MD D+63
- Batesville, AR R+49
- Danville, KY R+20
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Idaho 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.