Lancaster leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 81% of adults in Lancaster typically vote, above the U.S. average of about 62%. Among adults in Lancaster, ~45% vote Democratic, ~36% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How Lancaster compares
Among cities within 25 miles, Lancaster leans more Democratic than 74 of 140 neighbors.
Lancaster runs about 14 points more Republican than Massachusetts as a whole.
Why Lancaster 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 Lancaster, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 52% of adults in Lancaster hold a bachelor's degree, about 24 points above the U.S. average of 28%. Dense areas vote Democratic, and Lancaster sits in the top fifth on density (about 35%, above 83% of cities). A high never-married share predicts Democratic voting, and about 33% of adults in Lancaster have never been married, above 82% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Lancaster, MA sits in the top tenth 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 Lancaster looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lancaster 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 74%, about 14 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Lancaster have completed high school, above 85% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ponakin Mill, MA D+16
- Clinton, MA D+12
- Sterling, MA D+3
- Bolton, MA D+28
- Still River, MA D+34
- South Bolton, MA D+31
- Harvard Station, MA D+29
- Berlin, MA D+18
- Leominster, MA D+9
- West Berlin, MA D+16
Cities with Similar Populations
- Nettleton, MS R+44
- Moosic, PA R+5
- Stanley, WI R+33
- Pepper Pike, OH D+30
- Bristol, WI R+23
- Florence, NJ D+10
- Lamar, MO R+60
- Rib Mountain, WI R+13
- Linden, NC R+21
- Battlefield, MO R+32
All Local Stats
Home Services
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.