Montgomery County leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 67% of adults in Montgomery County typically vote, near the U.S. average of about 62%. Among adults in Montgomery County, ~19% vote Democratic, ~48% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Montgomery County compares
Among counties within 50 miles, Montgomery County leans more Republican than 8 of 19 neighbors.
Montgomery County runs about 25 points more Republican than Indiana as a whole.
Politics vary noticeably by city within Montgomery County. The southeast side is the most Republican-leaning (R+61) and the west side is the least Republican-leaning (R+44), a spread of about 17 points.
Why Montgomery County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Montgomery County. The lean here lands roughly where demographic data alone would predict.
Local retail density and voter turnout
Places with dense local retail within a mile tend to turn out at a higher rate; Montgomery County, IN sits in the top tenth nationally on this measure. Nearby retail does not change how people vote; it reflects how urban and built-up a place is.
Why turnout in Montgomery County looks the way it does
Homeowners vote more often than renters. About 82% of households in Montgomery County own their home, about 6 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Fountain County, IN R+58
- Parke County, IN R+59
- Tippecanoe County, IN D+9
- Putnam County, IN R+46
- Clinton County, IN R+45
- Boone County, IN R+19
- Warren County, IN R+58
- Hendricks County, IN R+20
- Vermillion County, IN R+50
- Vermilion County, IL R+22
Counties with Similar Populations
- Independence County, AR R+57
- Lawrence County, MO R+60
- Cass County, IN R+38
- Oneida County, WI R+18
- Scott County, MO R+43
- Jasper County, IA R+28
- Pontotoc County, OK R+44
- Franklin County, IL R+52
- Brown County, TX R+58
- Marion County, IL R+47
Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.