03451 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% 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 71% of adults in 03451 typically vote, above the U.S. average of about 62%. Among adults in 03451, ~29% vote Democratic, ~43% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How 03451 compares
Among zip codes within 15 miles, 03451 leans more Republican than 21 of 22 neighbors.
03451 runs about 23 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and 03451 sits clearly on the Republican side.
Why 03451 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 03451, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In 03451, about 97% of residents are non-Hispanic white, about 25 points above the U.S. average of 72%; about 11% of adults hold a bachelor's degree, about 28 points below the New Hampshire average of 39%. 03451 runs against the grain of New Hampshire, a Republican-leaning outlier in a roughly evenly split state.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 03451, NH sits above the national average on this measure.
Why turnout in 03451 looks the way it does
Turnout in 03451 sits close to the national pattern. 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.