02346 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 82% of adults in 02346 typically vote, above the U.S. average of about 62%. Among adults in 02346, ~38% vote Democratic, ~44% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How 02346 compares
Among zip codes within 15 miles, 02346 leans more Republican than 17 of 33 neighbors.
02346 runs about 33 points more Republican than Massachusetts as a whole. Massachusetts leans Democratic overall, while 02346 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 02346. The southwest side runs the most Democratic (D+4) and the southeast side runs the most Republican (R+21), a spread of about 25 points.
Why 02346 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 02346, not a ranked or complete list of what matters most.
02346 votes against the grain of Massachusetts. Massachusetts leans Democratic overall, while 02346 runs about 33 points more Republican.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as 02346, MA does.
Why turnout in 02346 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 02346 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 71%, about 11 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.