Marietta, NY Political Map | Democrat & Republican Areas in Marietta

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

Marietta leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.

 

About 78% of adults in Marietta typically vote, above the U.S. average of about 62%. Among adults in Marietta, ~34% vote Democratic, ~44% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.

How Marietta compares

Among cities within 25 miles, Marietta leans more Republican than 56 of 119 neighbors.

Marietta runs about 27 points more Republican than New York as a whole. New York leans Democratic overall, while Marietta is one of the few Republican-leaning pockets.

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

Marietta votes against the grain of New York. New York leans Democratic overall, while Marietta runs about 27 points more Republican.

Walkability and Republican lean

Places with a low walkability score tend to lean Republican; Marietta, NY sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Marietta looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Marietta 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 72%, about 12 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Marietta have completed high school, above 83% 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.