Tarrs leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 77% of adults in Tarrs typically vote, above the U.S. average of about 62%. Among adults in Tarrs, ~24% vote Democratic, ~53% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Tarrs compares
Among cities within 25 miles, Tarrs leans more Republican than 127 of 224 neighbors.
Tarrs runs about 37 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within Tarrs. The southwest side is the most Republican-leaning (R+51) and the north side is the least Republican-leaning (R+35), a spread of about 16 points.
Why Tarrs 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 Tarrs, not a ranked or complete list of what matters most.
Tarrs votes Republican even though it is densely developed (about 33%, above 82% of cities). Here an older population outweighs the Democratic lean that density usually predicts.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Tarrs, PA 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 Tarrs looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in Tarrs have completed high school, about 5 points above the Pennsylvania average of 91%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hunker, PA R+37
- Ruffsdale, PA R+48
- Alverton, PA R+48
- Superior, PA R+42
- Mount Pleasant, PA R+40
- New Stanton, PA R+34
- Reagantown, PA R+53
- Youngwood, PA R+28
- Carpentertown, PA R+54
- Scottdale, PA R+39
Cities with Similar Populations
- Sudan, TX R+76
- Odom, TX R+80
- Orr, MI R+35
- Coalton, KY R+60
- Evening Shade, AR R+71
- Franklin, NE R+68
- Thomas, ID R+53
- Frost, MI R+30
- Island Falls, ME R+45
- Waubun, MN R+21
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Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of 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.