Summit Mills is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 53% of adults in Summit Mills typically vote, below the U.S. average of about 62%. Among adults in Summit Mills, ~8% vote Democratic, ~45% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How Summit Mills compares
Among cities within 25 miles, Summit Mills leans more Republican than 97 of 119 neighbors.
Summit Mills runs about 67 points more Republican than Pennsylvania as a whole.
Why Summit Mills 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 Summit Mills, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Summit Mills, more than 99% of residents are non-Hispanic white, about 27 points above the U.S. average of 72%; about 9% of adults hold a bachelor's degree, about 17 points below the Pennsylvania average of 26%. A high family-household share predicts Republican voting, and about 84% of households in Summit Mills are family households, above 95% of cities.
High-school completion and voter turnout
Places with low high-school-completion share tend to turn out at a lower rate; Summit Mills, PA sits in the bottom tenth nationally on this measure.
Why turnout in Summit Mills looks the way it does
Areas with low high-school completion turn out at lower rates. About 67% of adults in Summit Mills have completed high school, about 22 points below the U.S. average of 90%. Renters vote less often than owners, and about 28% of households in Summit Mills rent, above 81% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fort Hill, PA R+65
- Salisbury Junction, PA R+66
- Garrett, PA R+69
- Boynton, PA R+67
- Springs, PA R+65
- Salisbury, PA R+66
- Meyersdale, PA R+55
- St. Paul, PA R+66
- Casselman, PA R+73
Cities with Similar Populations
- Mecca, TX R+74
- Zap, ND R+76
- Lambert, MO R+63
- Pace, LA R+68
- Pitner Junction, TX R+61
- Ridgely, MO R+49
- Tyaskin, MD R+25
- Roper, GA R+75
- Chapman, WV R+66
- Fairdale, PA R+54
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Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of 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.