Great Brook Valley leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 39% of adults in Great Brook Valley typically vote, below the U.S. average of about 62%. Among adults in Great Brook Valley, ~26% vote Democratic, ~13% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How Great Brook Valley compares
Among neighborhoods within 5 miles, Great Brook Valley leans more Democratic than 13 of 23 neighbors.
Great Brook Valley runs about 6 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within Great Brook Valley. The south side is the most Democratic-leaning (D+41) and the east side is the least Democratic-leaning (D+26), a spread of about 16 points.
Why Great Brook Valley 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 Great Brook Valley, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 62% of adults in Great Brook Valley have never been married, well above similar-sized neighborhoods (around 40%).
Population density and Democratic lean
Places with high population density tend to lean Democratic; Great Brook Valley, Worcester, MA sits in the top quarter nationally on this measure.
Why turnout in Great Brook Valley looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Great Brook Valley is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 48%, about 23 points below the Massachusetts average of 72%. Renters vote less often than owners, and about 85% of households in Great Brook Valley rent, compared to around 58% in nearby neighborhoods. High food insecurity lines up with lower turnout, and about 45% of adults in Great Brook Valley report food insecurity, above 96% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- North Lincoln Street, Worcester, MA D+38
- Greendale, Worcester, MA D+27
- Indian Lake East, Worcester, MA D+36
- Indian Hill, Worcester, MA D+27
- Bell Hill, Worcester, MA D+36
- Lake Park, Worcester, MA D+30
- Forest Grove, Worcester, MA D+30
- Franklin Plantation, Worcester, MA D+34
- Central Business District, Worcester, MA D+42
- Institute Park, Worcester, MA D+50
Neighborhoods with Similar Populations
- Shorewood, Seattle, WA D+45
- Madison Condominium, Falls Church, VA D+45
- Country Club Heights, Charlotte, NC D+52
- Starmount, Charlotte, NC D+32
- Steubing Ranch, San Antonio, TX D+5
- Elmwood, Syracuse, NY D+59
- Marston, Littleton, CO D+22
- Park Place, Norfolk, VA D+72
- Errol Heights, Portland, OR D+43
- Ellaville, Hyattsville, MD D+73
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.