Campbell County leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 76% of adults in Campbell County typically vote, above the U.S. average of about 62%. Among adults in Campbell County, ~32% vote Democratic, ~44% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Campbell County compares
Among counties within 50 miles, Campbell County leans more Republican than 2 of 24 neighbors.
Campbell County runs about 15 points more Democratic than Kentucky as a whole.
Politics vary noticeably by city within Campbell County. The northwest side runs the most Democratic (D+11) and the southeast side runs the most Republican (R+44), a spread of about 54 points.
Why Campbell 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 Campbell County, not a ranked or complete list of what matters most.
Campbell County votes Republican even though it is densely developed (about 60%, far above the Kentucky average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Campbell County, KY sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Campbell County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Campbell 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 64%, above 73% of counties. High high-school completion lines up with higher turnout, and about 94% of adults in Campbell County have completed high school, above 83% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Kenton County, KY R+14
- Hamilton County, OH D+21
- Clermont County, OH R+37
- Boone County, KY R+28
- Pendleton County, KY R+62
- Grant County, KY R+62
- Ohio County, IN R+58
- Butler County, OH R+20
- Dearborn County, IN R+53
- Gallatin County, KY R+57
Counties with Similar Populations
- Bowie County, TX R+29
- Tuscarawas County, OH R+48
- Calvert County, MD R+14
- Madison County, KY R+26
- St. Croix County, WI R+20
- Lauderdale County, AL R+47
- Rockdale County, GA D+42
- Steuben County, NY R+32
- Pottawattamie County, IA R+18
- Suffolk City, VA D+20
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.