15435 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 76% of adults in 15435 typically vote, above the U.S. average of about 62%. Among adults in 15435, ~23% vote Democratic, ~53% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How 15435 compares
Among zip codes within 15 miles, 15435 leans more Republican than 38 of 75 neighbors.
15435 runs about 38 points more Republican than Pennsylvania as a whole.
Why 15435 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 15435, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 83% of residents in 15435 drive to work alone, about 9 points above the U.S. average of 74%.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 15435, PA sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 15435 looks the way it does
Turnout in 15435 sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.