Neighborhood Nine is a Democratic stronghold. About 89% of voters here vote Democratic and 11% Republican.
About 63% of adults in Neighborhood Nine typically vote, near the U.S. average of about 62%. Among adults in Neighborhood Nine, ~56% vote Democratic, ~7% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Neighborhood Nine compares
Among neighborhoods within 5 miles, Neighborhood Nine leans more Democratic than 47 of 48 neighbors.
Neighborhood Nine runs about 53 points more Democratic than Massachusetts as a whole.
Why Neighborhood Nine leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Neighborhood Nine, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 80% of adults in Neighborhood Nine hold a bachelor's degree, about 52 points above the U.S. average of 28%. Dense areas vote Democratic, and Neighborhood Nine sits in the top fifth on density (more than 99%, above 89% of neighborhoods). A high never-married share predicts Democratic voting, and about 51% of adults in Neighborhood Nine have never been married, above 83% of neighborhoods.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Neighborhood Nine, Cambridge, MA sits in the top tenth nationally on this measure.
Why turnout in Neighborhood Nine looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Neighborhood Nine 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 more than 99% of adults in Neighborhood Nine have completed high school, above 93% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Avon Hill, Cambridge, MA D+79
- West Cambridge, Cambridge, MA D+78
- North Cambridge, Cambridge, MA D+71
- Aggasiz-Harvard, Cambridge, MA D+78
- Spring Hill, Somerville, MA D+75
- Ball Square, Somerville, MA D+70
- Riverside, Cambridge, MA D+78
- Mid-Cambridge, Cambridge, MA D+77
- Tufts, Somerville, MA D+71
- Strawberry Hill, Cambridge, MA D+78
Neighborhoods with Similar Populations
- Fordville, Southgate, MI R+8
- Vine, Kalamazoo, MI D+51
- Boal, Chula Vista, CA D+23
- Route 66 Historic District, Amarillo, TX R+12
- Milan, New Orleans, LA D+62
- Paloma Lake, Round Rock, TX D+5
- Woburn Street Historic District, Reading, MA D+33
- Pecan Springs Springdale, Austin, TX D+69
- Mooretown and Hollywood Heights, Shreveport, LA D+90
- Belle Valley, Erie, PA R+4
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.