03431 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican. These figures are model estimates: New Hampshire did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.
About 74% of adults in 03431 typically vote, above the U.S. average of about 62%. Among adults in 03431, ~44% vote Democratic, ~30% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How 03431 compares
Among zip codes within 15 miles, 03431 leans more Democratic than 21 of 24 neighbors.
03431 runs about 18 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by block within 03431. The south side is the most Democratic-leaning (D+28) and the southeast side is the least Democratic-leaning (D+10), a spread of about 18 points.
Why 03431 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 03431, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 43% of adults in 03431 hold a bachelor's degree, about 14 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 36% of adults in 03431 have never been married, above 82% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 03431, NH sits in the top quarter nationally on this measure.
Why turnout in 03431 looks the way it does
Turnout in 03431 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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 New Hampshire Secretary of State, Elections Division, 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. NH did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.