04103 is a Democratic stronghold. About 77% of voters here vote Democratic and 23% 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 79% of adults in 04103 typically vote, above the U.S. average of about 62%. Among adults in 04103, ~61% vote Democratic, ~18% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 04103 compares
Among zip codes within 15 miles, 04103 leans more Democratic than 22 of 26 neighbors.
04103 runs about 47 points more Democratic than Maine as a whole.
Politics vary noticeably by block within 04103. The southeast side is the most Democratic-leaning (D+78) and the west side is the least Democratic-leaning (D+29), a spread of about 48 points.
Why 04103 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 04103, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 59% of adults in 04103 hold a bachelor's degree, about 31 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 38% of adults in 04103 have never been married, above 85% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 04103, ME sits in the top quarter nationally on this measure.
Why turnout in 04103 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 04103 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 98% of adults in 04103 have completed high school, above 95% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.