Plainfield leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 92% of adults in Plainfield typically vote, above the U.S. average of about 62%. Among adults in Plainfield, ~61% vote Democratic, ~31% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How Plainfield compares
Among cities within 25 miles, Plainfield leans more Democratic than 71 of 107 neighbors.
Plainfield runs about 7 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by neighborhood within Plainfield. The east side is the most Democratic-leaning (D+34) and the northwest side is the least Democratic-leaning (D+16), a spread of about 18 points.
Why Plainfield 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 Plainfield, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 51% of adults in Plainfield hold a bachelor's degree, about 23 points above the U.S. average of 28%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Plainfield, 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 Plainfield looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Plainfield 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 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 97% of households in Plainfield own their home, about 22 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in Plainfield have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Cummington, MA D+36
- Hawley, MA D+25
- Windsor, MA D+12
- Lithia, MA D+34
- Ashfield, MA D+44
- West Hawley, MA D+11
- Swift River, MA D+34
- Savoy, MA R+6
- Buckland, MA D+32
- South Ashfield, MA D+45
Cities with Similar Populations
- Johnsburg, NY R+15
- Gordon, OH R+60
- Trent, SD R+53
- West City, IL R+42
- Victory, NY R+14
- Oscar, LA R+72
- Arbon Valley, ID R+61
- Gum Branch, NC R+44
- Lucerne, IN R+58
- Plymouth, IA R+36
All Local Stats
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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.