Oak Bluffs, MA Political Map | Democrat & Republican Areas in Oak Bluffs

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

Oak Bluffs leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.

 

About 88% of adults in Oak Bluffs typically vote, above the U.S. average of about 62%. Among adults in Oak Bluffs, ~61% vote Democratic, ~27% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.

How Oak Bluffs compares

Among cities within 25 miles, Oak Bluffs leans more Democratic than 40 of 48 neighbors.

Oak Bluffs runs about 13 points more Democratic than Massachusetts as a whole.

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

Dense areas vote Democratic. About 33% of residents in Oak Bluffs live in densely developed areas, above 82% of cities. High college attainment predicts Democratic voting, and Oak Bluffs sits in the top quarter (about 55%, above 95% of cities).

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Oak Bluffs, MA sits in the top tenth 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 Oak Bluffs looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Oak Bluffs 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in Oak Bluffs have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.

Sources and methodology

Precinct-level voting records used to fit the model come from Massachusetts Secretary of the Commonwealth, 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.