03304 leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% 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 89% of adults in 03304 typically vote, above the U.S. average of about 62%. Among adults in 03304, ~50% vote Democratic, ~39% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How 03304 compares
Among zip codes within 15 miles, 03304 leans more Democratic than 15 of 23 neighbors.
03304 runs about 9 points more Democratic than New Hampshire as a whole.
Why 03304 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 03304, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 60% of adults in 03304 hold a bachelor's degree, about 32 points above the U.S. average of 28%.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; 03304, NH sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 03304 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 03304 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 76%, about 16 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 89% of households in 03304 own their home, above 84% of zip codes. High high-school completion lines up with higher turnout, and about 99% of adults in 03304 have completed high school, above 97% of zip codes. 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.