Cold Spring Harbor, NY Political Map | Democrat & Republican Areas in Cold Spring Harbor

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

Cold Spring Harbor leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.

 

About 93% of adults in Cold Spring Harbor typically vote, above the U.S. average of about 62%. Among adults in Cold Spring Harbor, ~44% vote Democratic, ~49% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.

How Cold Spring Harbor compares

Among cities within 25 miles, Cold Spring Harbor leans more Republican than 119 of 234 neighbors.

Cold Spring Harbor runs about 19 points more Republican than New York as a whole. New York leans Democratic overall, while Cold Spring Harbor is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Cold Spring Harbor. The southwest side is the most split-leaning (R+11) and the east side is the least split-leaning (Even), a spread of about 11 points.

Why Cold Spring Harbor 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 Cold Spring Harbor, not a ranked or complete list of what matters most.

Cold Spring Harbor votes Republican even though it is densely developed (about 76%, far 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 Cold Spring Harbor are family households, above 93% of cities. Cold Spring Harbor runs against the grain of New York, a Republican-leaning pocket in a Democratic-leaning state.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Cold Spring Harbor, NY sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in Cold Spring Harbor looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Cold Spring Harbor 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 77%, about 17 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Cold Spring Harbor own their home, about 19 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in Cold Spring Harbor have completed high school, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.