South Bronx, Bronx, NY Political Map | Democrat & Republican Areas in South Bronx

By the BestNeighborhood data science team. Last updated May 2026.

South Bronx is a Democratic stronghold. About 75% of voters here vote Democratic and 25% Republican.

 

About 38% of adults in South Bronx typically vote, below the U.S. average of about 62%. Among adults in South Bronx, ~29% vote Democratic, ~9% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.

How South Bronx compares

Among neighborhoods within 5 miles, South Bronx leans more Democratic than 31 of 42 neighbors.

South Bronx runs about 38 points more Democratic than New York as a whole.

Politics vary noticeably by block within South Bronx. The west side is the most Democratic-leaning (D+56) and the southeast side is the least Democratic-leaning (D+44), a spread of about 12 points.

Why South Bronx 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 South Bronx, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in South Bronx live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 54% of adults in South Bronx have never been married, above 87% of neighborhoods.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; South Bronx, Bronx, NY sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in South Bronx looks the way it does

Areas with limited routine healthcare access turn out at lower rates. South Bronx 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 45%, about 18 points below the New York average of 64%. Renters vote less often than owners, and about 91% of households in South Bronx rent, about 66 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 46% of adults in South Bronx report food insecurity, above 97% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

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.