Perth is a Republican stronghold. About 20% of voters here vote Democratic and 80% Republican.
About 87% of adults in Perth typically vote, above the U.S. average of about 62%. Among adults in Perth, ~17% vote Democratic, ~70% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Perth compares
Among cities within 25 miles, Perth leans more Republican than 57 of 100 neighbors.
Perth runs about 40 points more Republican than Indiana as a whole.
Why Perth 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 Perth, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Perth, more than 99% of residents are non-Hispanic white, about 28 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%. Car-dependent areas vote Republican, and about 90% of residents in Perth drive to work alone, above 93% of cities.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Perth, IN sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Perth looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Perth 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%, above 67% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Coal Bluff, IN R+47
- Carbon, IN R+59
- Bee Ridge, IN R+53
- Smockville, IN R+60
- Brazil, IN R+49
- Fontanet, IN R+37
- Bridgeton, IN R+63
- Knightsville, IN R+51
- Cloverland, IN R+45
- Harmony, IN R+53
Cities with Similar Populations
- Georgeville, MO R+62
- Dull, OH R+70
- Mccabe, MT R+11
- Pidcoke, TX R+69
- Doverel, GA Even
- Bond, CO D+8
- Swett, SD R+16
- Nash, FL R+69
- Persia, TN R+71
- West Shiloh, TN R+81
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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.