Cumberland County leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican. These figures are model estimates: Maine did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.
About 82% of adults in Cumberland County typically vote, above the U.S. average of about 62%. Among adults in Cumberland County, ~53% vote Democratic, ~29% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Cumberland County compares
Among counties within 50 miles, Cumberland County is the most Democratic-leaning.
Cumberland County runs about 22 points more Democratic than Maine as a whole.
Politics vary noticeably by city within Cumberland County. The southeast side runs the most Democratic (D+57) and the north side runs the most Republican (R+6), a spread of about 63 points.
Why Cumberland County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Cumberland County, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 53% of adults in Cumberland County hold a bachelor's degree, about 25 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Cumberland County, ME sits in the top quarter nationally on this measure.
Why turnout in Cumberland County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cumberland County 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%. High high-school completion lines up with higher turnout, and about 97% of adults in Cumberland County have completed high school, in the top fraction of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Sagadahoc County, ME D+8
- Androscoggin County, ME R+12
- York County, ME R+2
- Oxford County, ME R+25
- Lincoln County, ME Even
- Carroll County, NH R+2
- Strafford County, NH D+4
- Kennebec County, ME R+7
- Belknap County, NH R+8
- Knox County, ME D+7
Counties with Similar Populations
- Gloucester County, NJ R+2
- St. Louis City, MO D+65
- Greene County, MO R+18
- Clayton County, GA D+68
- Ottawa County, MI R+16
- Dutchess County, NY D+8
- McHenry County, IL R+5
- Cleveland County, OK R+14
- Lubbock County, TX R+23
- Chatham County, GA D+26
Sources and methodology
Precinct-level voting records used to fit the model come from Maine Secretary of State, Bureau of Corporations Elections and Commissions, 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. ME did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.