South Wellfleet is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.
About 87% of adults in South Wellfleet typically vote, above the U.S. average of about 62%. Among adults in South Wellfleet, ~66% vote Democratic, ~21% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How South Wellfleet compares
Among cities within 25 miles, South Wellfleet leans more Democratic than 28 of 29 neighbors.
South Wellfleet runs about 26 points more Democratic than Massachusetts as a whole.
Why South Wellfleet 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 South Wellfleet, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 71% of adults in South Wellfleet hold a bachelor's degree, about 43 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in South Wellfleet is about 77%, below 69% of cities.
Population density, never-married share, and Democratic lean
Places that combine high population density and a low never-married share tend to lean Democratic, as South Wellfleet, MA does.
Why turnout in South Wellfleet looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Wellfleet 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 78%, about 18 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in South Wellfleet have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Wellfleet, MA D+50
- North Eastham, MA D+30
- Eastham, MA D+31
- Truro, MA D+40
- Orleans, MA D+38
- North Truro, MA D+40
- South Orleans, MA D+31
- Brewster, MA D+29
- Provincetown, MA D+69
Cities with Similar Populations
- Missler, KS R+69
- Sanger, ND R+62
- Hudson, LA R+85
- Zoe, KY R+65
- Onomea, HI D+37
- Quaker City, NH R+29
- Upshaw, AL R+85
- Calhoun, MS R+17
- Frogtown, IL R+58
- Fallon, CA D+36
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.