Bluff leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 50% of adults in Bluff typically vote, below the U.S. average of about 62%. Among adults in Bluff, ~37% vote Democratic, ~13% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How Bluff compares
Among neighborhoods within 5 miles, Bluff leans more Democratic than 12 of 36 neighbors.
Bluff runs about 50 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and Bluff sits clearly on the Democratic side.
Politics vary noticeably by block within Bluff. The east side is the most Democratic-leaning (D+68) and the southwest side is the least Democratic-leaning (D+45), a spread of about 23 points.
Why Bluff leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Bluff, not a ranked or complete list of what matters most.
Bluff votes against the grain of Pennsylvania. Pennsylvania is roughly evenly split, while Bluff runs about 50 points more Democratic. A high never-married share predicts Democratic voting, and about 89% of adults in Bluff have never been married, in the top fraction of neighborhoods.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Bluff, Pittsburgh, PA sits in the top tenth nationally on this measure.
Why turnout in Bluff looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Bluff is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 15 points below the Pennsylvania average of 64%. Low high-school completion lines up with lower turnout, and about 73% of adults in Bluff have completed high school, below 92% of neighborhoods. High-crime urban areas turn out at lower rates, and Bluff sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Central Business District, Pittsburgh, PA D+55
- Southside Flats, Pittsburgh, PA D+55
- Mount Washington, Pittsburgh, PA D+40
- Southside Slopes, Pittsburgh, PA D+42
- West Oakland, Pittsburgh, PA D+69
- Knoxville, Pittsburgh, PA D+59
- Central Northside, Pittsburgh, PA D+74
- Oakland, Pittsburgh, PA D+58
- North Oakland, Pittsburgh, PA D+65
- Perry South, Pittsburgh, PA D+77
Neighborhoods with Similar Populations
- Banksville, Pittsburgh, PA D+20
- Highline Villages, Aurora, CO D+45
- The Oaks, Bakersfield, CA R+22
- Calhoun, Minneapolis, MN D+74
- Savannah, Sunrise, FL D+14
- Conner, Detroit, MI D+86
- Central Topeka 2, Topeka, KS D+22
- CCSI-South Inglewood, Nashville, TN D+57
- East Cesar Chavez, Austin, TX D+62
- Dayton-Campbell Historic District, Hamilton, OH R+11
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.