Setauket-East Setauket, NY Political Map | Democrat & Republican Areas in Setauket-East Setauket

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

Setauket-East Setauket is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.

 

About 87% of adults in Setauket-East Setauket typically vote, above the U.S. average of about 62%. Among adults in Setauket-East Setauket, ~45% vote Democratic, ~42% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.

How Setauket-East Setauket compares

Among cities within 25 miles, Setauket-East Setauket leans more Democratic than 106 of 129 neighbors.

Setauket-East Setauket runs about 9 points more Republican than New York as a whole.

Politics vary noticeably by neighborhood within Setauket-East Setauket. The west side runs the most Democratic (D+15) and the southeast side runs the most Republican (R+10), a spread of about 25 points.

Why Setauket-East Setauket leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Setauket-East Setauket. The lean here lands roughly where demographic data alone would predict.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Setauket-East Setauket, NY sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Setauket-East Setauket looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Setauket-East Setauket 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Setauket-East Setauket have completed high school, above 94% of cities. 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.