01434 leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 56% of adults in 01434 typically vote, below the U.S. average of about 62%. Among adults in 01434, ~30% vote Democratic, ~26% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 01434 compares
Among zip codes within 15 miles, 01434 leans more Democratic than 10 of 42 neighbors.
01434 runs about 18 points more Republican than Massachusetts as a whole.
Politics vary noticeably by block within 01434. The northeast side is the most Democratic-leaning (D+22) and the west side is the least Democratic-leaning (D+4), a spread of about 18 points.
Why 01434 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 01434, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 54% of adults in 01434 have never been married, well above similar-sized zip codes (around 24%).
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as 01434, MA does.
Why turnout in 01434 looks the way it does
Areas with low high-school completion turn out at lower rates. About 76% of adults in 01434 have completed high school, about 14 points below the U.S. average of 90%. Strong routine healthcare access lines up with higher turnout, and 01434 sits in the top quarter on routine-care measures. 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.