Nissequogue leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 84% of adults in Nissequogue typically vote, above the U.S. average of about 62%. Among adults in Nissequogue, ~33% vote Democratic, ~50% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Nissequogue compares
Among cities within 25 miles, Nissequogue leans more Republican than 108 of 150 neighbors.
Nissequogue runs about 33 points more Republican than New York as a whole. New York leans Democratic overall, while Nissequogue is one of the few Republican-leaning pockets.
Why Nissequogue 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 Nissequogue, not a ranked or complete list of what matters most.
Nissequogue votes Republican even though it is densely developed (about 26%, modestly below the New York average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 78% of households in Nissequogue are family households, above 84% of cities. Nissequogue runs against the grain of New York, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Nissequogue, NY does.
Why turnout in Nissequogue looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Nissequogue 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 74%, about 14 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Nissequogue have completed high school, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Head of the Harbor, NY R+16
- St. James, NY R+25
- Kings Park, NY R+26
- Smithtown, NY R+27
- Village of the Branch, NY R+23
- Stony Brook, NY D+23
- Stony Brook University, NY D+35
- Nesconset, NY R+26
- East Setauket, NY R+2
- Lake Grove, NY R+24
Cities with Similar Populations
- Addy, WA R+46
- Pope, MS R+53
- Quinnesec, MI R+32
- Winchester, MO D+8
- Mosier, OR R+4
- Cowiche, WA R+25
- Coloma, WI R+37
- Metlakatla, AK Even
- Searles Valley, CA R+46
- Herndon, PA R+66
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.