Harrisburg is a Republican stronghold. About 19% of voters here vote Democratic and 81% Republican.
About 73% of adults in Harrisburg typically vote, above the U.S. average of about 62%. Among adults in Harrisburg, ~14% vote Democratic, ~59% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Harrisburg compares
Among cities within 25 miles, Harrisburg leans more Republican than 57 of 92 neighbors.
Harrisburg runs about 42 points more Republican than Indiana as a whole.
Politics vary noticeably by neighborhood within Harrisburg. The west side is the most Republican-leaning (R+65) and the east side is the least Republican-leaning (R+54), a spread of about 11 points.
Why Harrisburg 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 Harrisburg, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 86% of residents in Harrisburg drive to work alone, about 12 points above the U.S. average of 74%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Harrisburg, IN sits in the bottom 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 Harrisburg looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Harrisburg 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 65%, about 5 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Harrisburg own their home, about 15 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Connersville, IN R+53
- Falmouth, IN R+66
- Milton, IN R+60
- Dublin, IN R+53
- Lyonsville, IN R+65
- Cambridge City, IN R+52
- Mauzy, IN R+65
- East Germantown, IN R+54
- Glenwood, IN R+67
- Gings, IN R+66
Cities with Similar Populations
- Long Beach, MD R+24
- Alta, WY D+6
- Crossnore, NC R+54
- Sheffield, VT R+19
- Mount Salem, NJ R+42
- Lucan, MN R+66
- West Barre, NY R+51
- Wood Springs, TX R+37
- Eulala, SC R+52
- Connersville, KY R+52
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.