Henniker leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% 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 69% of adults in Henniker typically vote, above the U.S. average of about 62%. Among adults in Henniker, ~41% vote Democratic, ~28% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Henniker compares
Among cities within 25 miles, Henniker leans more Democratic than 95 of 102 neighbors.
Henniker runs about 15 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by neighborhood within Henniker. The northwest side is the most Democratic-leaning (D+18) and the south side is the least Democratic-leaning (D+4), a spread of about 14 points.
Why Henniker 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 Henniker, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 37% of adults in Henniker hold a bachelor's degree, about 9 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 53% of adults in Henniker have never been married, in the top fraction of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Henniker, 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 Henniker looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Henniker is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in Henniker have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- West Hopkinton, NH D+13
- Hillsborough Center, NH R+22
- Hillsborough, NH R+7
- Hillsboro, NH R+15
- Contoocook, NH D+13
- Davisville, NH D+17
- Melvin Mills, NH D+4
- Warner, NH Even
- East Deering, NH R+12
- Weare, NH R+11
Cities with Similar Populations
- Cape Neddick, ME D+7
- Purchase, NY D+19
- Cramerton, NC R+24
- Chandler, IN R+40
- Century, FL R+30
- Three Points, AZ R+16
- White Cloud, MI R+39
- Manakin-Sabot, VA R+11
- Saranac, MI R+35
- Whites Creek, TN D+21
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.