Somersworth is a true toss-up. About 51% of voters here vote Democratic and 49% 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 72% of adults in Somersworth typically vote, above the U.S. average of about 62%. Among adults in Somersworth, ~37% vote Democratic, ~35% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Somersworth compares
Among cities within 25 miles, Somersworth sits roughly in the middle of the political spectrum, with 62 neighbors leaning further in the place's direction and 29 leaning the other way.
Politically, Somersworth sits close to the rest of New Hampshire.
Politics vary noticeably by neighborhood within Somersworth. The east side runs the most Democratic (D+16) and the west side runs the most Republican (R+15), a spread of about 31 points.
Why Somersworth leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Somersworth. None of them point strongly toward either party.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Somersworth, NH sits in the top tenth nationally on this measure.
Why turnout in Somersworth looks the way it does
Turnout in Somersworth 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
- Rollinsford, NH D+4
- Berwick, ME R+10
- Dover, NH D+22
- South Berwick, ME Even
- Rochester, NH R+9
- Madbury, NH D+12
- North Berwick, ME R+19
- Tatnic, ME R+23
- Brixham, ME Even
- Barrington, NH R+17
Cities with Similar Populations
- Kill Devil Hills, NC R+21
- Storm Lake, IA R+7
- Foxboro, MA D+13
- Havre, MT R+38
- Middleville, MI R+33
- West Perrine, FL D+23
- Marshall, MI R+17
- Yadkinville, NC R+61
- North Smithfield, RI R+3
- Bernalillo, NM D+10
All Local Stats
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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.