Rochdale leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 76% of adults in Rochdale typically vote, above the U.S. average of about 62%. Among adults in Rochdale, ~35% vote Democratic, ~41% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Rochdale compares
Among cities within 25 miles, Rochdale leans more Republican than 66 of 113 neighbors.
Rochdale runs about 32 points more Republican than Massachusetts as a whole. Massachusetts leans Democratic overall, while Rochdale is one of the few Republican-leaning pockets.
Why Rochdale 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 Rochdale, not a ranked or complete list of what matters most.
Rochdale votes Republican even though it is densely developed (about 27%, well below the Massachusetts average of 50%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Rochdale runs against the grain of Massachusetts, a Republican-leaning pocket in a Democratic-leaning state.
Cholesterol-screening access and voter turnout
Places with high cholesterol-screening access tend to turn out at a higher rate; Rochdale, MA sits in the top tenth nationally on this measure. Cholesterol screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Rochdale looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Rochdale 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 71%, about 11 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- North Oxford, MA R+12
- Leicester, MA R+11
- Cherry Valley, MA R+6
- Tafts Corner, MA R+12
- Auburn, MA D+6
- South Spencer, MA R+11
- Charlton, MA R+14
- Spencer, MA R+4
- Mystic Grove, MA R+10
- Oxford, MA R+11
Cities with Similar Populations
- Junction City, WI R+31
- Hastings, PA R+52
- Bethel Island, CA R+15
- Haddock, GA R+51
- Thompsonville, IL R+64
- Lopez, WA D+54
- Ubly, MI R+49
- Wittenberg, WI R+39
- Sheffield, MA D+22
- Moorhead, MS D+53
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.