Union leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% 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 85% of adults in Union typically vote, above the U.S. average of about 62%. Among adults in Union, ~31% vote Democratic, ~54% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How Union compares
Among cities within 25 miles, Union leans more Republican than 83 of 100 neighbors.
Union runs about 31 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and Union sits clearly on the Republican side.
Politics vary noticeably by neighborhood within Union. The southeast side is the most Republican-leaning (R+33) and the northwest side is the least Republican-leaning (R+18), a spread of about 15 points.
Why Union 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 Union, not a ranked or complete list of what matters most.
Union votes against the grain of New Hampshire. New Hampshire is roughly evenly split, while Union runs about 31 points more Republican.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Union, NH sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Union looks the way it does
Homeowners vote more often than renters. About 95% of households in Union own their home, about 13 points above the New Hampshire average of 82%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Milton, NH R+28
- Milton Mills, NH R+26
- New Durham, NH R+25
- Farmington, NH R+24
- Sanbornville, NH R+17
- Wakefield, NH R+17
- South Wolfeboro, NH R+14
- Acton, ME R+25
- East Alton, NH R+21
- Lebanon, ME R+34
Cities with Similar Populations
- Alta, IA R+33
- Moundridge, KS R+53
- Craigsville, VA R+34
- Hopetown, OH R+40
- Nedrow, NY D+6
- Poultney, VT R+19
- Beulah, FL R+41
- Plainview, TN R+69
- Marion, MI R+52
- Transfer, PA R+45
All Local Stats
Home Services
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.