Hillsborough leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% 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 76% of adults in Hillsborough typically vote, above the U.S. average of about 62%. Among adults in Hillsborough, ~35% vote Democratic, ~41% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Hillsborough compares
Among cities within 25 miles, Hillsborough leans more Republican than 59 of 99 neighbors.
Hillsborough runs about 10 points more Republican than New Hampshire as a whole.
Politics vary noticeably by neighborhood within Hillsborough. The northeast side runs the most Democratic (D+6) and the north side runs the most Republican (R+17), a spread of about 23 points.
Why Hillsborough leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Hillsborough. None of them point strongly toward either party.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Hillsborough, 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 Hillsborough looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Hillsborough 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 67%, about 7 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hillsboro, NH R+15
- Hillsborough Center, NH R+22
- East Deering, NH R+12
- Henniker, NH D+17
- Antrim, NH R+9
- North Branch, NH R+20
- Hillsborough Upper Village, NH R+23
- Bennington, NH R+10
- Weare, NH R+11
- Lower Village, NH R+6
Cities with Similar Populations
- Warren, ND R+47
- Mack Creek Village, VA R+58
- Dedham, ME R+14
- Donaldson, WV R+72
- Puerto De Luna, NM R+5
- Deep River, IN R+31
- Sandy Valley, PA R+62
- Schochoh, KY R+64
- Reeds, ME R+36
- Mayville, MN R+38
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.