Peoria is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 72% of adults in Peoria typically vote, above the U.S. average of about 62%. Among adults in Peoria, ~12% vote Democratic, ~60% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Peoria compares
Among cities within 25 miles, Peoria leans more Republican than 85 of 87 neighbors.
Peoria runs about 46 points more Republican than Indiana as a whole.
Why Peoria 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 Peoria, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Peoria, about 99% of residents are non-Hispanic white, about 26 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 6 points below the Indiana average of 22%.
Never-married share and voter turnout
Places with a low never-married share tend to turn out at a higher rate; Peoria, IN sits in the bottom tenth nationally on this measure.
Why turnout in Peoria looks the way it does
Homeowners vote more often than renters. About 90% of households in Peoria own their home, about 9 points above the Indiana average of 82%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- New Santa Fe, IN R+64
- Park View Heights, IN R+60
- Santa Fe, IN R+66
- Richvalley, IN R+60
- Grissom Arb, IN R+55
- Valley Brook, IN R+55
- Loree, IN R+59
- Peru, IN R+39
- Somerset, IN R+62
- Amboy, IN R+63
Cities with Similar Populations
- Ypsilanti, ND R+57
- East Laurinburg, NC D+13
- Roe, AR R+72
- Egypt, AL R+81
- Riverton, OR R+30
- Ransom, KS R+81
- Randalia, MD R+47
- Reed Corners, NY R+41
- Ratcliff, TX R+52
- Alhambra, VA R+46
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.