Nelson County leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 77% of adults in Nelson County typically vote, above the U.S. average of about 62%. Among adults in Nelson County, ~21% vote Democratic, ~56% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Nelson County compares
Among counties within 50 miles, Nelson County leans more Republican than 10 of 26 neighbors.
Nelson County runs about 15 points more Republican than Kentucky as a whole.
Politics vary noticeably by city within Nelson County. The southwest side is the most Republican-leaning (R+58) and the east side is the least Republican-leaning (R+37), a spread of about 21 points.
Why Nelson 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 Nelson County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 82% of residents in Nelson County drive to work alone, about 8 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 69% of households in Nelson County are family households, above 75% of counties.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Nelson County, KY 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 Nelson County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Nelson County is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 62%, above 63% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Washington County, KY R+58
- Bullitt County, KY R+48
- Spencer County, KY R+56
- Marion County, KY R+50
- Larue County, KY R+58
- Hardin County, KY R+27
- Jefferson County, KY D+20
- Shelby County, KY R+32
- Anderson County, KY R+50
- Taylor County, KY R+50
Counties with Similar Populations
- Barron County, WI R+28
- Cortland County, NY R+17
- Coles County, IL R+26
- Chambers County, TX R+58
- Charlottesville City, VA D+60
- Clinton County, IA R+21
- Allegany County, NY R+39
- Campbell County, WY R+65
- Stevens County, WA R+37
- Jackson County, IN R+51
Sources and methodology
Precinct-level voting records used to fit the model come from Kentucky State Board of 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.