Swift River leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 86% of adults in Swift River typically vote, above the U.S. average of about 62%. Among adults in Swift River, ~58% vote Democratic, ~28% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Swift River compares
Among cities within 25 miles, Swift River leans more Democratic than 78 of 111 neighbors.
Swift River runs about 9 points more Democratic than Massachusetts as a whole.
Why Swift River 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 Swift River, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 46% of adults in Swift River hold a bachelor's degree, about 17 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Swift River, MA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Swift River looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Swift River 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 about 96% of adults in Swift River have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lithia, MA D+34
- Cummington, MA D+36
- Goshen, MA D+31
- West Chesterfield, MA D+30
- Chesterfield, MA D+30
- Worthington, MA D+26
- South Ashfield, MA D+45
- Williamsburg, MA D+42
- Plainfield, MA D+32
- Ashfield, MA D+44
Cities with Similar Populations
- Elba, KY R+56
- Greenbrier, MD R+40
- Belvedere, OH R+51
- Oasis, MO R+59
All Local Stats
Home Services
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.