Mariners Harbor leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 49% of adults in Mariners Harbor typically vote, below the U.S. average of about 62%. Among adults in Mariners Harbor, ~30% vote Democratic, ~19% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How Mariners Harbor compares
Among neighborhoods within 5 miles, Mariners Harbor leans more Democratic than 13 of 18 neighbors.
Mariners Harbor runs about 11 points more Democratic than New York as a whole.
Politics vary noticeably by block within Mariners Harbor. The northwest side runs the most Democratic (D+59) and the southeast side runs the most Republican (R+3), a spread of about 63 points.
Why Mariners Harbor leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Mariners Harbor. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Mariners Harbor, Staten Island, NY sits in the top tenth nationally on this measure.
Why turnout in Mariners Harbor looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in Mariners Harbor have more than one occupant per room, above 83% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Howland Hook, Staten Island, NY D+58
- Port Richmond, Staten Island, NY D+24
- Bulls Head, Staten Island, NY R+31
- Westerleigh-Castleton, Staten Island, NY R+32
- Bloomfield, Staten Island, NY R+37
- Sunset Hill, Staten Island, NY R+14
- Constable Hook, Bayonne, NJ D+6
- Richmondtown, Staten Island, NY R+41
- Todt Hill, Staten Island, NY R+26
- New Brighton, Staten Island, NY D+36
Neighborhoods with Similar Populations
- Pennsport-Whitman-Queen, Philadelphia, PA D+42
- South End, Boston, MA D+64
- Crenshaw, Los Angeles, CA D+74
- Pacific Beach, San Diego, CA D+35
- Eagle Ford, Dallas, TX D+47
- Stapleton, Denver, CO D+56
- West Bloomington, Bloomington, MN D+33
- South Gate, Glen Burnie, MD D+32
- Nevada-Lidgerwood, Spokane, WA D+2
- Pottage Park, Chicago, IL D+26
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.