Bryn Mawr leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 53% of adults in Bryn Mawr typically vote, below the U.S. average of about 62%. Among adults in Bryn Mawr, ~28% vote Democratic, ~25% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How Bryn Mawr compares
Among neighborhoods within 5 miles, Bryn Mawr leans more Democratic than 2 of 18 neighbors.
Bryn Mawr runs about 6 points more Republican than New York as a whole.
Politics vary noticeably by block within Bryn Mawr. The west side is the most Democratic-leaning (D+16) and the east side is the least Democratic-leaning (Even), a spread of about 15 points.
Why Bryn Mawr 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 Bryn Mawr, not a ranked or complete list of what matters most.
Density combined with diversity predicts Democratic voting. Non-Hispanic white share in Bryn Mawr is about 41%, about 31 points below the U.S. average of 72%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Bryn Mawr, Yonkers, NY sits in the top quarter nationally on this measure.
Why turnout in Bryn Mawr looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in Bryn Mawr have more than one occupant per room, above 85% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Northwest Yonkers, Yonkers, NY D+33
- Cedar Knolls, Bronxville, NY D+26
- Getty Square, Yonkers, NY D+51
- Lawrence Park, Bronxville, NY D+22
- Nodine Hill, Yonkers, NY D+34
- Lincoln Park, Yonkers, NY D+6
- Downtown Yonkers, Yonkers, NY D+48
- Southeast Yonkers, Yonkers, NY D+11
- Colonial Heights, Yonkers, NY D+19
- Park Hills, Yonkers, NY D+28
Neighborhoods with Similar Populations
- Bricktown, Chicago, IL D+64
- Walnut Grove, Broomfield, CO D+15
- Cumberland, Atlanta, GA D+43
- SBHS, San Bernardino, CA D+27
- Columbia Street Waterfront District, Brooklyn, NY D+78
- San Andreas, Highland, CA D+13
- Polonia, Milwaukee, WI D+32
- South Main, Houston, TX D+60
- Seward, Minneapolis, MN D+78
- Hamilton Main Street Historic District, Hamilton, OH R+14
Sources and methodology
Precinct-level voting records used to fit the model come from New York State Board 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.