South Westport is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 84% of adults in South Westport typically vote, above the U.S. average of about 62%. Among adults in South Westport, ~43% vote Democratic, ~41% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How South Westport compares
Among cities within 25 miles, South Westport sits roughly in the middle of the political spectrum, with 40 neighbors leaning further in the place's direction and 42 leaning the other way.
South Westport runs about 22 points more Republican than Massachusetts as a whole.
Why South Westport leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in South Westport. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; South Westport, MA sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in South Westport looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Westport 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 76%, about 16 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Head of Westport, MA R+5
- Cow Yard, MA D+8
- Westport Point, MA D+18
- Westport, MA R+10
- South Dartmouth, MA D+8
- North Dartmouth, MA R+4
- Dartmouth, MA R+12
- Smith Mills, MA R+5
- North Westport, MA R+18
- Little Compton, RI D+9
Cities with Similar Populations
- Zion, WI R+29
- Coxburg, MS R+20
- Niagara, PA R+41
- Mount Zion, KY R+65
- Brooke, VA R+8
- Pencil Bluff, AR R+64
- Dudleytown, IN R+64
- Dubois, GA R+47
- Forest Grove, FL R+36
- Heislerville, NJ R+42
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.