Jamaica Plain, MA Political Map | Democrat & Republican Areas in Jamaica Plain

By the BestNeighborhood data science team. Last updated May 2026.

Jamaica Plain is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.

 

About 59% of adults in Jamaica Plain typically vote, near the U.S. average of about 62%. Among adults in Jamaica Plain, ~50% vote Democratic, ~9% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Jamaica Plain compares

Among cities within 25 miles, Jamaica Plain leans more Democratic than 149 of 153 neighbors.

Jamaica Plain runs about 46 points more Democratic than Massachusetts as a whole.

Politics vary noticeably by neighborhood within Jamaica Plain. The south side is the most Democratic-leaning (D+79) and the northeast side is the least Democratic-leaning (D+60), a spread of about 18 points.

Why Jamaica Plain 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 Jamaica Plain, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in Jamaica Plain live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Jamaica Plain sits in the top quarter (about 68%, above 98% of cities). A high never-married share predicts Democratic voting, and about 55% of adults in Jamaica Plain have never been married, in the top fraction of cities.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Jamaica Plain, MA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in Jamaica Plain looks the way it does

Renters vote less often than owners. About 63% of households in Jamaica Plain rent, about 38 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 4% of homes in Jamaica Plain have more than one occupant per room, above 80% of cities. Learn more about the findings and methodology on the political spectrum map.

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.