Leominster leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 68% of adults in Leominster typically vote, above the U.S. average of about 62%. Among adults in Leominster, ~37% vote Democratic, ~31% Republican, and ~32% don't vote. The map below shows estimated turnout by block group.
How Leominster compares
Among cities within 25 miles, Leominster leans more Democratic than 68 of 132 neighbors.
Leominster runs about 16 points more Republican than Massachusetts as a whole.
Politics vary noticeably by neighborhood within Leominster. The north side is the most Democratic-leaning (D+12) and the southwest side is the least Democratic-leaning (D+2), a spread of about 10 points.
Why Leominster 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 Leominster, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 79% of residents in Leominster live in densely developed areas, about 42 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Leominster sits in the top quarter (about 34%, above 81% of cities). A high never-married share predicts Democratic voting, and about 32% of adults in Leominster have never been married, above 81% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Leominster, MA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Leominster looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Leominster 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 68%, about 8 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ponakin Mill, MA D+16
- Lunenburg, MA D+4
- Fitchburg, MA D+15
- Shirley, MA D+12
- West Sterling, MA D+10
- Lancaster, MA D+11
- Sterling, MA D+3
- Devens, MA D+7
- Leino Park, MA Even
- Harvard Station, MA D+29
Cities with Similar Populations
- Sun Prairie, WI D+37
- Moline, IL D+16
- Morrisville, NC D+37
- Bullhead City, AZ R+30
- San Bruno, CA D+43
- West Bend, WI R+23
- Chatsworth, CA D+16
- North Atlanta, GA D+38
- Burlington, VT D+65
- Gonzales, LA R+24
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.