Nashua leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% 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 70% of adults in Nashua typically vote, above the U.S. average of about 62%. Among adults in Nashua, ~42% vote Democratic, ~28% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Nashua compares
Among cities within 25 miles, Nashua leans more Democratic than 89 of 116 neighbors.
Nashua runs about 16 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by neighborhood within Nashua. The east side is the most Democratic-leaning (D+27) and the southwest side is the least Democratic-leaning (D+10), a spread of about 17 points.
Why Nashua leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Nashua, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 41% of adults in Nashua hold a bachelor's degree, about 13 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 36% of adults in Nashua have never been married, above 89% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Nashua, NH sits in the top tenth nationally on this measure.
Why turnout in Nashua looks the way it does
Turnout in Nashua 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 Cities
- Hudson, NH R+2
- Hollis, NH D+13
- Dunstable, MA D+4
- Litchfield, NH R+4
- Tyngsboro, MA Even
- Merrimack, NH D+5
- Pepperell, MA D+2
- Pelham, NH R+5
- East Merrimack, NH D+12
- North Chelmsford, MA D+10
Cities with Similar Populations
- Jacksonville, NC R+11
- Sanford, FL D+9
- Mount Pleasant, SC R+10
- Bryan, TX D+7
- San Leandro, CA D+41
- Kennesaw, GA D+7
- Brandon, FL Even
- St. Augustine, FL R+21
- Macomb, MI R+28
- Fort Smith, AR R+16
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.