Andover leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% 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 Andover typically vote, above the U.S. average of about 62%. Among adults in Andover, ~38% vote Democratic, ~48% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Andover compares
Among cities within 25 miles, Andover leans more Republican than 70 of 97 neighbors.
Andover runs about 14 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and Andover sits clearly on the Republican side.
Why Andover 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 Andover, not a ranked or complete list of what matters most.
Andover votes against the grain of New Hampshire. New Hampshire is roughly evenly split, while Andover runs about 14 points more Republican.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; Andover, NH sits in the bottom quarter nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in Andover looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Andover 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 72%, about 12 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- East Andover, NH R+11
- Salisbury Heights, NH R+9
- Wilmot, NH D+8
- Webster Lake, NH R+14
- Salisbury, NH R+10
- Elmwood, NH R+9
- North Wilmot, NH R+6
- Elkins, NH D+33
- Hill Center, NH R+9
- Danbury, NH R+8
Cities with Similar Populations
- Cadyville, NY R+17
- Hesper, MT R+48
- Marine On St. Croix, MN D+14
- Damariscotta, ME D+8
- Mohawk, TN R+71
- Fair Play, MO R+67
- East Gull Lake, MN R+34
- Stewartsville, MO R+55
- Pleasureville, KY R+56
- Freeport, OH R+61
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.