Harwich Port leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 84% of adults in Harwich Port typically vote, above the U.S. average of about 62%. Among adults in Harwich Port, ~51% vote Democratic, ~33% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Harwich Port compares
Among cities within 25 miles, Harwich Port leans more Democratic than 23 of 41 neighbors.
Politically, Harwich Port sits close to the rest of Massachusetts.
Politics vary noticeably by neighborhood within Harwich Port. The northeast side is the most Democratic-leaning (D+28) and the southwest side is the least Democratic-leaning (D+17), a spread of about 11 points.
Why Harwich Port 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 Harwich Port, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 62% of adults in Harwich Port hold a bachelor's degree, about 33 points above the U.S. average of 28%. Dense areas vote Democratic, and Harwich Port 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; Harwich Port, 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 Harwich Port looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Harwich Port 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 Harwich Port have completed high school, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Harwich, MA D+23
- Northwest Harwich, MA D+17
- Dennis Port, MA D+17
- South Chatham, MA D+33
- East Harwich, MA D+16
- West Dennis, MA D+23
- West Chatham, MA D+31
- South Dennis, MA D+16
- Brewster, MA D+29
- Chatham, MA D+31
Cities with Similar Populations
- Plains, TX R+71
- North Adams, MI R+52
- Grulla, TX R+14
- Blacksher, AL R+69
- Beavertown, PA R+68
- Chula, GA R+74
- La Veta, CO D+2
- Mentha, MI R+27
- Leoti, KS R+53
- Covington, TX R+75
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.