Great Valley, NY Political Map | Democrat & Republican Areas in Great Valley

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

Great Valley leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.

 

About 79% of adults in Great Valley typically vote, above the U.S. average of about 62%. Among adults in Great Valley, ~24% vote Democratic, ~56% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.

How Great Valley compares

Among cities within 25 miles, Great Valley leans more Republican than 30 of 97 neighbors.

Great Valley runs about 53 points more Republican than New York as a whole. New York leans Democratic overall, while Great Valley is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Great Valley. The east side is the most Republican-leaning (R+46) and the southeast side is the least Republican-leaning (R+30), a spread of about 16 points.

Why Great Valley 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 Great Valley, not a ranked or complete list of what matters most.

Car-dependent areas vote Republican. About 88% of residents in Great Valley drive to work alone, about 14 points above the U.S. average of 74%. Great Valley runs against the grain of New York, a Republican-leaning pocket in a Democratic-leaning state.

Park access and Republican lean

Places with low park coverage tend to lean Republican; Great Valley, NY sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.

Why turnout in Great Valley looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Great Valley 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 61%. Homeowners vote more often than renters, and about 94% of households in Great Valley own their home, about 19 points above the U.S. average of 75%. 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.