North Great River leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 78% of adults in North Great River typically vote, above the U.S. average of about 62%. Among adults in North Great River, ~27% vote Democratic, ~51% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How North Great River compares
Among cities within 25 miles, North Great River leans more Republican than 155 of 163 neighbors.
North Great River runs about 42 points more Republican than New York as a whole. New York leans Democratic overall, while North Great River is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within North Great River. The northeast side is the most Republican-leaning (R+39) and the east side is the least Republican-leaning (R+24), a spread of about 15 points.
Why North Great River 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 North Great River, not a ranked or complete list of what matters most.
North Great River votes Republican even though it is densely developed (about 59%, well above 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 82% of households in North Great River are family households, above 93% of cities. North Great River runs against the grain of New York, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; North Great River, NY sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in North Great River looks the way it does
Turnout in North Great River sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Islip Terrace, NY R+26
- Central Islip, NY D+27
- East Islip, NY R+30
- Oakdale, NY R+31
- Great River, NY R+17
- Islandia, NY D+4
- Islip, NY R+20
- Bohemia, NY R+33
- West Sayville, NY R+18
- Ronkonkoma, NY R+26
Cities with Similar Populations
- Mason, TN R+7
- Mineral Springs, NC R+39
- Minden, NE R+57
- St. James City, FL R+41
- Marionville, MO R+60
- Freeland, MD R+26
- Gordo, AL R+55
- Harveys Lake, PA R+27
- Monticello, MS R+35
- Prescott, MI R+40
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.