03307 leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% 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 88% of adults in 03307 typically vote, above the U.S. average of about 62%. Among adults in 03307, ~36% vote Democratic, ~52% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How 03307 compares
Among zip codes within 15 miles, 03307 leans more Republican than 13 of 17 neighbors.
03307 runs about 20 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and 03307 sits clearly on the Republican side.
Why 03307 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 03307, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 79% of households in 03307 are family households, about 13 points above the U.S. average of 67%. 03307 runs against the grain of New Hampshire, a Republican-leaning outlier in a roughly evenly split state.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 03307, NH sits in the top quarter nationally on this measure.
Why turnout in 03307 looks the way it does
Homeowners vote more often than renters. About 91% of households in 03307 own their home, about 9 points above the New Hampshire average of 82%. 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.