Mountain Home AFB leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 35% of adults in Mountain Home AFB typically vote, below the U.S. average of about 62%. Among adults in Mountain Home AFB, ~15% vote Democratic, ~20% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How Mountain Home AFB compares
Among cities within 25 miles, Mountain Home AFB is the least Republican-leaning.
Mountain Home AFB runs about 22 points more Democratic than Idaho as a whole.
Politics vary noticeably by neighborhood within Mountain Home AFB. The south side is the most Republican-leaning (R+78) and the north side is the least Republican-leaning (R+8), a spread of about 70 points.
Why Mountain Home AFB 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 AFB, not a ranked or complete list of what matters most.
Mountain Home AFB votes Republican even though it is densely developed (about 64%, far above the Idaho average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 86% of households in Mountain Home AFB are family households, above 97% of cities.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Mountain Home AFB, ID sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Mountain Home AFB looks the way it does
Renters vote less often than owners. About 90% of households in Mountain Home AFB rent, about 65 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and Mountain Home AFB sits in the bottom quarter on routine-care measures. Low high-school completion lines up with lower turnout, and about 99% of adults in Mountain Home AFB have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mountain Home, ID R+44
- Grand View, ID R+71
- Bruneau, ID R+66
- Orchard, ID R+54
- Hammett, ID R+62
- Oreana, ID R+74
- Glenns Ferry, ID R+58
- Pine, ID R+57
- Prairie, ID R+55
- King Hill, ID R+56
Cities with Similar Populations
- Williamsburg, PA R+64
- Arnold, CA D+9
- High Bridge, NJ D+6
- Madrid, IA R+25
- Steens, MS R+53
- Brookhaven, WV R+15
- Weatherby Lake, MO R+10
- Conklin, NY R+26
- Bremen, OH R+58
- West Creek, NJ R+39
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.