Merrimac is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 87% of adults in Merrimac typically vote, above the U.S. average of about 62%. Among adults in Merrimac, ~44% vote Democratic, ~43% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Merrimac compares
Among cities within 25 miles, Merrimac sits roughly in the middle of the political spectrum, with 35 neighbors leaning further in the place's direction and 75 leaning the other way.
Merrimac runs about 23 points more Republican than Massachusetts as a whole.
Why Merrimac leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Merrimac. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Merrimac, MA sits in the top quarter nationally on this measure.
Why turnout in Merrimac looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Merrimac 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Merrimac have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Newton, NH R+8
- West Newbury, MA D+22
- Amesbury Town, MA D+22
- South Hampton, NH Even
- Plaistow, NH D+3
- Kensington, NH Even
- Groveland, MA Even
- Haverhill, MA D+11
- East Kingston, NH Even
Cities with Similar Populations
- Edgemoor, DE D+51
- Keaau, HI D+12
- Manchaca, TX D+21
- Allendale, NJ D+7
- Gleneagle, CO R+19
- Old Tappan, NJ R+8
- Fellsmere, FL R+13
- Tucumcari, NM R+19
- Oak View, CA D+13
- Munfordville, KY R+60
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.