Anderson County leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 70% of adults in Anderson County typically vote, above the U.S. average of about 62%. Among adults in Anderson County, ~22% vote Democratic, ~48% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Anderson County compares
Among counties within 50 miles, Anderson County leans more Republican than 1 of 17 neighbors.
Anderson County runs about 9 points more Republican than Tennessee as a whole.
Politics vary noticeably by city within Anderson County. The northwest side is the most Republican-leaning (R+69) and the southwest side is the least Republican-leaning (R+17), a spread of about 52 points.
Why Anderson County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Anderson County. The lean here lands roughly where demographic data alone would predict.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Anderson County, TN sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Anderson County looks the way it does
Turnout in Anderson 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
- Knox County, TN R+13
- Campbell County, TN R+65
- Loudon County, TN R+53
- Morgan County, TN R+70
- Union County, TN R+70
- Roane County, TN R+57
- Blount County, TN R+49
- Scott County, TN R+70
- Sevier County, TN R+58
- Monroe County, TN R+67
Counties with Similar Populations
- Ross County, OH R+44
- Clallam County, WA D+9
- Cattaraugus County, NY R+29
- Cole County, MO R+29
- White County, AR R+56
- Augusta County, VA R+45
- Cheshire County, NH Even
- Walker County, TX R+20
- Chatham County, NC R+3
- Cayuga County, NY R+17
Sources and methodology
Precinct-level voting records used to fit the model come from Tennessee Secretary of State, Division 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.