South Park Township leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 93% of adults in South Park Township typically vote, above the U.S. average of about 62%. Among adults in South Park Township, ~42% vote Democratic, ~51% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How South Park Township compares
Among cities within 25 miles, South Park Township leans more Republican than 97 of 266 neighbors.
South Park Township runs about 8 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within South Park Township. The southeast side is the most split-leaning (R+19) and the southwest side is the least split-leaning (Even), a spread of about 19 points.
Why South Park Township 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 Park Township, not a ranked or complete list of what matters most.
South Park Township votes Republican even though it is densely developed (about 66%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; South Park Township, PA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in South Park Township looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Park Township 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in South Park Township have completed high school, above 88% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Finleyville, PA R+29
- Jefferson Hills, PA R+20
- Bethel Park, PA D+5
- Pleasant Hills, PA D+6
- Venetia, PA R+19
- Elrama, PA R+37
- Bunola, PA R+39
- Baldwin, PA D+3
- Castle Shannon, PA D+10
- Upper St. Clair, PA D+12
Cities with Similar Populations
- Decorah, IA D+4
- Mount Pleasant, IA R+24
- Batesville, IN R+51
- St. Louis, MI R+17
- Hampshire, IL R+19
- Briarcliff Manor, NY D+21
- Ishpeming, MI R+12
- Milton-Freewater, OR R+32
- Newport Coast, CA R+10
- Harrison, MI R+40
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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.