Still River leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 93% of adults in Still River typically vote, above the U.S. average of about 62%. Among adults in Still River, ~62% vote Democratic, ~31% Republican, and ~7% don't vote. The map below shows estimated turnout by block group.
How Still River compares
Among cities within 25 miles, Still River leans more Democratic than 113 of 143 neighbors.
Still River runs about 9 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by neighborhood within Still River. The northeast side is the most Democratic-leaning (D+35) and the northwest side is the least Democratic-leaning (D+16), a spread of about 18 points.
Why Still 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 Still River, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 79% of adults in Still River hold a bachelor's degree, about 50 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Still River, MA sits above the national average on this measure.
Why turnout in Still River looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Still 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 80%, about 20 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Still River own their home, about 15 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and more than 99% of adults in Still River have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Harvard Station, MA D+29
- Harvard, MA D+28
- Devens, MA D+7
- South Bolton, MA D+31
- Bolton, MA D+28
- Ponakin Mill, MA D+16
- Shirley, MA D+12
- Lancaster, MA D+11
- Boxborough, MA D+26
- Ayer, MA D+20
Cities with Similar Populations
- Filer City, MI R+16
- Index, WA R+24
- Paris, IA R+64
- Mars Hill, MS R+67
- Mount Olive, TN R+72
- Church Hill, KY R+51
- Bayside, TX R+59
- Florence, KS R+62
- Linville, NC R+29
- Bessie, OK R+77
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.