Anderson leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 70% of adults in Anderson typically vote, above the U.S. average of about 62%. Among adults in Anderson, ~25% vote Democratic, ~45% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Anderson compares
Among cities within 25 miles, Anderson leans more Republican than 5 of 50 neighbors.
Anderson runs about 10 points more Republican than South Carolina as a whole.
Politics vary noticeably by neighborhood within Anderson. The south side runs the most Democratic (D+19) and the southwest side runs the most Republican (R+48), a spread of about 67 points.
Why Anderson leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Anderson, not a ranked or complete list of what matters most.
Anderson votes Republican even though it is densely developed (about 56%, far above the South Carolina average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Anderson, SC sits in the top quarter nationally 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 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Anderson is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Centerville, SC R+44
- Northlake, SC R+39
- Homeland Park, SC R+12
- White Plains, SC R+60
- Starr, SC R+68
- Belton, SC R+55
- La France, SC R+21
- Pendleton, SC R+36
- Saylors Crossroads, SC R+73
Cities with Similar Populations
- Conway, AR R+13
- Lakewood, CA D+17
- Cheyenne, WY R+18
- Land O' Lakes, FL R+22
- Muncie, IN Even
- Apple Valley, CA R+26
- Castle Rock, CO R+15
- Victoria, TX R+26
- Lithonia, GA D+81
- Upland, CA Even
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from South Carolina State Election Commission, 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.