Suffern leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 72% of adults in Suffern typically vote, above the U.S. average of about 62%. Among adults in Suffern, ~38% vote Democratic, ~34% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Suffern compares
Among cities within 25 miles, Suffern leans more Democratic than 172 of 275 neighbors.
Suffern runs about 7 points more Republican than New York as a whole.
Politics vary noticeably by neighborhood within Suffern. The northwest side runs the most Democratic (D+23) and the northeast side runs the most Republican (R+12), a spread of about 35 points.
Why Suffern leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Suffern, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 86% of residents in Suffern live in densely developed areas, about 50 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Suffern sits in the top quarter (about 43%, above 89% of cities). A high never-married share predicts Democratic voting, and about 35% of adults in Suffern have never been married, above 87% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Suffern, NY sits in the top tenth nationally on this measure.
Why turnout in Suffern looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Suffern is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 70%, about 10 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Montebello, NY R+13
- Hillburn, NY D+6
- Airmont, NY R+44
- Mahwah, NJ R+5
- Sterlington, NY R+11
- Monsey, NY R+92
- Kaser, NY R+98
- Ramsey, NJ Even
- Upper Saddle River, NJ R+8
- Wesley Hills, NY R+60
Cities with Similar Populations
- Millbury, MA Even
- Clayton, CA D+14
- Weigelstown, PA R+25
- Luling, LA R+39
- New Providence, NJ D+19
- Nanticoke, PA R+17
- Edgewood, WA Even
- Lake Forest Park, WA D+56
- Sumner, WA D+6
- Berwyn, PA D+26
All Local Stats
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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.