East Dennis leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 95% of adults in East Dennis typically vote, above the U.S. average of about 62%. Among adults in East Dennis, ~53% vote Democratic, ~42% Republican, and ~5% don't vote. The map below shows estimated turnout by block group.
How East Dennis compares
Among cities within 25 miles, East Dennis leans more Democratic than 11 of 50 neighbors.
East Dennis runs about 13 points more Republican than Massachusetts as a whole.
Why East Dennis 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 East Dennis, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 52% of adults in East Dennis hold a bachelor's degree, about 24 points above the U.S. average of 28%. Dense areas vote Democratic, and East Dennis sits in the top fifth on density (about 73%, above 93% of cities).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; East Dennis, MA sits in the top 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 East Dennis looks the way it does
Areas with strong routine healthcare access turn out at higher rates. East Dennis 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%. High high-school completion lines up with higher turnout, and about 99% of adults in East Dennis have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Dennis, MA D+20
- South Dennis, MA D+16
- Yarmouth Port, MA D+20
- Northwest Harwich, MA D+17
- Brewster, MA D+29
- South Yarmouth, MA D+19
- West Dennis, MA D+23
- Dennis Port, MA D+17
- Harwich, MA D+23
- Harwich Port, MA D+21
Cities with Similar Populations
- Kansas, OK R+61
- Weldon, NC D+58
- Leeds, MA D+68
- Downs, IL R+32
- Rhoadesville, VA R+51
- Thaxton, MS R+83
- Sunapee, NH D+9
- Bovey, MN R+28
- Mapleton, ME R+32
- Boyceville, WI R+37
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.