South Deerfield leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 83% of adults in South Deerfield typically vote, above the U.S. average of about 62%. Among adults in South Deerfield, ~51% vote Democratic, ~32% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How South Deerfield compares
Among cities within 25 miles, South Deerfield leans more Democratic than 55 of 106 neighbors.
Politically, South Deerfield sits close to the rest of Massachusetts.
Politics vary noticeably by neighborhood within South Deerfield. The south side is the most Democratic-leaning (D+39) and the east side is the least Democratic-leaning (D+19), a spread of about 20 points.
Why South Deerfield 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 Deerfield, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 32% of residents in South Deerfield live in densely developed areas, above 81% of cities. High college attainment predicts Democratic voting, and South Deerfield sits in the top quarter (about 39%, above 86% of cities). A high never-married share predicts Democratic voting, and about 38% of adults in South Deerfield have never been married, above 91% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; South Deerfield, 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 South Deerfield looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Deerfield 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 South Deerfield have completed high school, above 81% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Wapping, MA D+22
- Whately, MA D+39
- Sunderland, MA D+48
- Deerfield, MA D+28
- West Deerfield, MA D+35
- North Leverett, MA D+50
- Factory Hollow, MA D+54
- North Hatfield, MA D+37
- Conway, MA D+44
- Leverett, MA D+54
Cities with Similar Populations
- Wolcott, NY R+35
- Minford, OH R+57
- Charlotte Harbor, FL R+22
- Glenwood, AR R+67
- Park Falls, WI R+31
- Marcellus, MI R+35
- Clyde, NY R+29
- Avon, MN R+47
- South Toms River, NJ R+3
- Minoa, NY Even
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.