Preble County is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 80% of adults in Preble County typically vote, above the U.S. average of about 62%. Among adults in Preble County, ~17% vote Democratic, ~63% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Preble County compares
Among counties within 50 miles, Preble County leans more Republican than 17 of 19 neighbors.
Preble County runs about 47 points more Republican than Ohio as a whole.
Why Preble County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Preble County, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Preble County, about 95% of residents are non-Hispanic white, about 23 points above the U.S. average of 72%; about 18% of adults hold a bachelor's degree, about 5 points below the Ohio average of 23%. Car-dependent areas vote Republican, and about 82% of residents in Preble County drive to work alone, above 84% of counties.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Preble County, OH sits above the national average 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 Preble County looks the way it does
Turnout in Preble County sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Union County, IN R+58
- Wayne County, IN R+31
- Montgomery County, OH D+6
- Butler County, OH R+20
- Darke County, OH R+61
- Fayette County, IN R+54
- Miami County, OH R+42
- Warren County, OH R+30
- Greene County, OH R+17
- Franklin County, IN R+63
Counties with Similar Populations
- Warren County, TN R+62
- Tioga County, PA R+50
- Williams County, ND R+61
- Cheatham County, TN R+55
- Clatsop County, OR D+6
- Upshur County, TX R+67
- Shawano County, WI R+35
- Isanti County, MN R+34
- Warren County, VA R+32
- Tallapoosa County, AL R+39
Sources and methodology
Precinct-level voting records used to fit the model come from Ohio 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.