Northborough leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 86% of adults in Northborough typically vote, above the U.S. average of about 62%. Among adults in Northborough, ~53% vote Democratic, ~33% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Northborough compares
Among cities within 25 miles, Northborough leans more Democratic than 103 of 152 neighbors.
Politically, Northborough sits close to the rest of Massachusetts.
Why Northborough 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 Northborough, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 66% of adults in Northborough hold a bachelor's degree, about 37 points above the U.S. average of 28%. Dense areas vote Democratic, and Northborough sits in the top fifth on density (about 57%, above 89% of cities).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Northborough, MA sits in the top quarter 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 Northborough looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Northborough 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 79%, about 19 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Northborough have completed high school, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- West Berlin, MA D+16
- Westborough, MA D+31
- Shrewsbury, MA D+22
- Morningdale, MA D+14
- Boylston, MA D+11
- Berlin, MA D+18
- Marlborough, MA D+21
- Southborough, MA D+31
- Hudson, MA D+15
- North Grafton, MA D+11
Cities with Similar Populations
- Blytheville, AR D+22
- Ludington, MI R+9
- Ballston Lake, NY Even
- Galion, OH R+48
- Gardendale, AL R+43
- Vandalia, OH R+27
- Manlius, NY D+20
- Glenn Heights, TX D+44
- Douglassville, PA R+15
- Horsham, PA D+12
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.