Andover leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 83% of adults in Andover typically vote, above the U.S. average of about 62%. Among adults in Andover, ~56% vote Democratic, ~28% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Andover compares
Among cities within 25 miles, Andover leans more Democratic than 101 of 144 neighbors.
Andover runs about 8 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by neighborhood within Andover. The east side is the most Democratic-leaning (D+45) and the west side is the least Democratic-leaning (D+23), a spread of about 22 points.
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.
Areas with high college attainment vote Democratic. About 76% of adults in Andover hold a bachelor's degree, about 47 points above the U.S. average of 28%. Dense areas vote Democratic, and Andover sits in the top fifth on density (about 69%, above 92% of cities).
Population density and Democratic lean
Places with high population density tend to lean Democratic; Andover, MA sits in the top tenth nationally on this measure.
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 79%, about 19 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Andover have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- North Andover, MA D+18
- Lawrence, MA D+17
- Tewksbury, MA Even
- Methuen Town, MA D+6
- North Reading, MA D+9
- Wilmington, MA Even
- Boxford, MA D+16
- Lowell, MA D+25
- Dracut, MA Even
Cities with Similar Populations
- Springville, UT R+37
- Huntington Station, NY D+14
- Emeryville, CA D+75
- Parkland, FL R+4
- Woodbury, NJ D+9
- Orange, NJ D+72
- Oxford, MS R+12
- Lebanon, OH R+38
- Fair Lawn, NJ D+3
- Farmington, MN R+11
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Massachusetts Secretary of the Commonwealth, Elections, 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. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.