Anderson leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 60% of adults in Anderson typically vote, near the U.S. average of about 62%. Among adults in Anderson, ~26% vote Democratic, ~34% Republican, and ~40% 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 4 of 90 neighbors.
Anderson runs about 4 points more Democratic than Indiana as a whole.
Politics vary noticeably by neighborhood within Anderson. The west side runs the most Democratic (D+26) and the northeast side runs the most Republican (R+25), a spread of about 51 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 70%, far above the Indiana average of 25%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Anderson, IN sits below 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 Anderson looks the way it does
Renters vote less often than owners. About 36% of households in Anderson rent, about 11 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Edgewood, IN R+21
- Chesterfield, IN R+36
- Daleville, IN R+44
- Markleville, IN R+48
- Middletown, IN R+53
- Pendleton, IN R+38
- Lapel, IN R+43
- Frankton, IN R+46
- Perkinsville, IN R+51
Cities with Similar Populations
- Burlington, NC D+9
- Dublin, CA D+35
- Grand Junction, CO R+11
- Traverse City, MI D+3
- Glen Burnie, MD D+17
- Tonawanda, NY D+9
- Lacey, WA D+23
- Gary, IN D+70
- Union City, CA D+33
- Lehi, UT R+37
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Indiana 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.