Mainstream leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% 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 76% of adults in Mainstream typically vote, above the U.S. average of about 62%. Among adults in Mainstream, ~24% vote Democratic, ~52% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Mainstream compares
Among cities within 25 miles, Mainstream leans more Republican than 29 of 62 neighbors.
Mainstream runs about 42 points more Republican than Maine as a whole. Maine leans Democratic overall, while Mainstream is one of the few Republican-leaning pockets.
Why Mainstream 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 Mainstream, not a ranked or complete list of what matters most.
Mainstream votes against the grain of Maine. Maine leans Democratic overall, while Mainstream runs about 42 points more Republican.
Population density and Republican lean
Places with low population density tend to lean Republican; Mainstream, ME sits below the national average on this measure.
Why turnout in Mainstream looks the way it does
Turnout in Mainstream sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Harmony, ME R+33
- Cambridge, ME R+41
- St. Albans, ME R+38
- Hartland, ME R+39
- Wellington, ME R+42
- Hutchins Corner, ME R+40
- Brighton, ME R+40
- Dexter, ME R+33
- Athens, ME R+37
- Parkman, ME R+42
Cities with Similar Populations
- Verona, CA R+42
- Tampico, MT R+61
- Talpa, TX R+81
- Lanham, TX R+75
- Henrytown, MN R+36
- Hermosa, VA R+5
- Ash Hill, NC R+67
- Upper Rociada, NM D+13
- Old Bland, MO R+65
- Manor Hill, PA R+55
All Local Stats
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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.