03102 leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% 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 65% of adults in 03102 typically vote, near the U.S. average of about 62%. Among adults in 03102, ~40% vote Democratic, ~25% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 03102 compares
Among zip codes within 15 miles, 03102 leans more Democratic than 20 of 22 neighbors.
03102 runs about 18 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by block within 03102. The east side is the most Democratic-leaning (D+33) and the southwest side is the least Democratic-leaning (D+11), a spread of about 22 points.
Why 03102 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 03102, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 40% of adults in 03102 have never been married, about 11 points above the U.S. average of 29%.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 03102, NH sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 03102 looks the way it does
Turnout in 03102 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.