Clinton County leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 83% of adults in Clinton County typically vote, above the U.S. average of about 62%. Among adults in Clinton County, ~22% vote Democratic, ~61% Republican, and ~17% 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 7 of 17 neighbors.
Clinton County runs about 30 points more Republican than Missouri as a whole.
Politics vary noticeably by city within Clinton County. The north side is the most Republican-leaning (R+61) and the northeast side is the least Republican-leaning (R+42), a spread of about 19 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.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Clinton County, MO 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 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
- DeKalb County, MO R+57
- Caldwell County, MO R+59
- Ray County, MO R+53
- Clay County, MO R+7
- Buchanan County, MO R+23
- Platte County, MO R+5
- Daviess County, MO R+63
- Andrew County, MO R+50
- Wyandotte County, KS D+26
- Doniphan County, KS R+58
Counties with Similar Populations
- Madison County, NC R+34
- Jackson County, WI R+21
- Gray County, TX R+59
- Fillmore County, MN R+32
- Logan County, AR R+63
- Nodaway County, MO R+38
- Llano County, TX R+56
- Union Parish, LA R+49
- Leake County, MS R+12
- Newton County, MS R+34
Sources and methodology
Precinct-level voting records used to fit the model come from Missouri 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.