03590 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% 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 03590 typically vote, near the U.S. average of about 62%. Among adults in 03590, ~20% vote Democratic, ~45% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How 03590 compares
Among zip codes within 15 miles, 03590 leans more Republican than 3 of 4 neighbors.
03590 runs about 40 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and 03590 sits clearly on the Republican side.
Why 03590 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 03590, not a ranked or complete list of what matters most.
03590 votes against the grain of New Hampshire. New Hampshire is roughly evenly split, while 03590 runs about 40 points more Republican. Low college attainment predicts Republican voting, and 03590 sits in the bottom quarter (about 16%, below 78% of zip codes).
Population density and Republican lean
Places with low population density tend to lean Republican; 03590, NH sits in the bottom quarter nationally on this measure.
Why turnout in 03590 looks the way it does
Turnout in 03590 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.