Clinton County is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 75% of adults in Clinton County typically vote, above the U.S. average of about 62%. Among adults in Clinton County, ~18% vote Democratic, ~57% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Clinton County compares
Among counties within 50 miles, Clinton County leans more Republican than 14 of 20 neighbors.
Clinton County runs about 41 points more Republican than Ohio as a whole.
Politics vary noticeably by city within Clinton County. The east side is the most Republican-leaning (R+66) and the north side is the least Republican-leaning (R+50), a spread of about 16 points.
Why Clinton County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Clinton County. The lean here lands roughly where demographic data alone would predict.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Clinton County, OH does.
Why turnout in Clinton County looks the way it does
Turnout in Clinton County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Highland County, OH R+61
- Warren County, OH R+30
- Greene County, OH R+17
- Fayette County, OH R+55
- Clermont County, OH R+37
- Montgomery County, OH D+6
- Brown County, OH R+61
- Butler County, OH R+20
- Clark County, OH R+21
- Hamilton County, OH D+21
Counties with Similar Populations
- Crawford County, OH R+51
- Fayette County, TN R+33
- Nez Perce County, ID R+35
- Okanogan County, WA R+16
- Butler County, MO R+52
- Marinette County, WI R+34
- Pierce County, WI R+19
- Oconee County, GA R+41
- Sweetwater County, WY R+53
- Gratiot County, MI R+28
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.