Mastic Beach leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 61% of adults in Mastic Beach typically vote, near the U.S. average of about 62%. Among adults in Mastic Beach, ~27% vote Democratic, ~34% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How Mastic Beach compares
Among cities within 25 miles, Mastic Beach leans more Republican than 42 of 90 neighbors.
Mastic Beach runs about 24 points more Republican than New York as a whole. New York leans Democratic overall, while Mastic Beach is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Mastic Beach. The northeast side is the most split-leaning (R+19) and the west side is the least split-leaning (R+2), a spread of about 17 points.
Why Mastic Beach 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 Mastic Beach, not a ranked or complete list of what matters most.
Mastic Beach votes Republican even though it is densely developed (about 81%, far above the New York average of 36%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Mastic Beach runs against the grain of New York, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Mastic Beach, NY sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Mastic Beach looks the way it does
Areas with high food insecurity turn out at lower rates. About 21% of adults in Mastic Beach report food insecurity, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Shirley, NY R+19
- Mastic, NY R+15
- Moriches, NY R+10
- Center Moriches, NY R+22
- Brookhaven, NY R+6
- Bellport, NY D+25
- East Moriches, NY R+24
- North Bellport, NY D+17
- Manorville, NY R+28
- Yaphank, NY R+22
Cities with Similar Populations
- North New Hyde Park, NY R+12
- Townsend, DE Even
- Boone, IA R+18
- Burlington, WA Even
- Otsego, MN R+24
- Fraser, MI R+10
- Plaquemine, LA R+17
- Southern Pines, NC D+5
- Seven Corners, VA D+37
- Pearl River, NY R+24
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.