South Heights leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 79% of adults in South Heights typically vote, above the U.S. average of about 62%. Among adults in South Heights, ~33% vote Democratic, ~46% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How South Heights compares
Among cities within 25 miles, South Heights leans more Republican than 103 of 202 neighbors.
South Heights runs about 15 points more Republican than Pennsylvania as a whole.
Why South Heights 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 South Heights, not a ranked or complete list of what matters most.
South Heights votes Republican even though it is densely developed (about 48%, modestly above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; South Heights, PA sits in the top 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 South Heights looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in South Heights have completed high school, about 6 points above the Pennsylvania average of 91%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Crescent, PA R+13
- Leetsdale, PA D+11
- Ambridge, PA D+6
- Edgeworth, PA D+23
- Aliquippa, PA R+3
- Gringo, PA R+33
- Bell Acres, PA Even
- Carnot-Moon, PA D+9
- Sewickley, PA D+15
- Sewickley Heights, PA Even
Cities with Similar Populations
- Carpenter, SD R+59
- West Okoboji, IA R+26
- Stith, TX R+79
- East Lexington, VA R+38
- Poolville, MS R+86
- Butts, GA R+37
- Neva, TN R+66
- Childs, NY R+45
- Willow Creek, MT R+52
- Isabella, MO R+65
All Local Stats
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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.