Mattituck is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 83% of adults in Mattituck typically vote, above the U.S. average of about 62%. Among adults in Mattituck, ~40% vote Democratic, ~43% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Mattituck compares
Among cities within 25 miles, Mattituck leans more Republican than 32 of 57 neighbors.
Mattituck runs about 16 points more Republican than New York as a whole. New York leans Democratic overall, while Mattituck is one of the few Republican-leaning pockets.
Why Mattituck 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 Mattituck, not a ranked or complete list of what matters most.
Mattituck votes against the grain of New York. New York leans Democratic overall, while Mattituck runs about 16 points more Republican.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Mattituck, NY sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Mattituck looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Mattituck 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Mattituck have completed high school, above 85% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Laurel, NY R+7
- Cutchogue, NY Even
- Jamesport, NY R+3
- Peconic, NY R+4
- Southold, NY Even
- Riverhead, NY R+3
- Shinnecock Hills, NY D+7
- North Sea, NY D+7
- Flanders, NY R+11
- Hampton Bays, NY R+6
Cities with Similar Populations
- Lower Grand Lagoon, FL R+37
- Baldwin, MI R+19
- French Camp, CA R+5
- Mount Pleasant, UT R+68
- Troup, TX R+57
- Eutawville, SC D+16
- Nassau, NY R+10
- Mayodan, NC R+45
- Rochester, MA R+8
- Sandusky, MI R+44
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.