Mount Union leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 64% of adults in Mount Union typically vote, near the U.S. average of about 62%. Among adults in Mount Union, ~17% vote Democratic, ~47% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Mount Union compares
Among cities within 25 miles, Mount Union leans more Republican than 6 of 120 neighbors.
Mount Union runs about 47 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within Mount Union. The east side is the most Republican-leaning (R+67) and the northeast side is the least Republican-leaning (R+11), a spread of about 56 points.
Why Mount Union 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 Mount Union, not a ranked or complete list of what matters most.
Mount Union votes Republican even though it is densely developed (about 43%, modestly above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Low college attainment predicts Republican voting, and Mount Union sits in the bottom quarter (about 13%, below 84% of cities).
Population density and Democratic lean
Places with high population density tend to lean Democratic; Mount Union, PA sits in the top quarter nationally on this measure.
Why turnout in Mount Union looks the way it does
Turnout in Mount Union 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
- Silver Ford Heights, PA R+67
- Aughwick, PA R+66
- Newton Hamilton, PA R+69
- Mapleton, PA R+69
- Birdville, PA R+69
- Shirleysburg, PA R+69
- Mill Creek, PA R+69
- Colfax, PA R+69
- Mapleton Depot, PA R+70
- Ryde, PA R+71
Cities with Similar Populations
- Tonasket, WA R+41
- Marysville, PA R+35
- Sobieski, WI R+44
- St. Augusta, MN R+38
- McConnellsburg, PA R+62
- Knightstown, IN R+53
- Houston, MO R+66
- Eagle Lake, FL R+24
- Spencerville, OH R+70
- Royal, AR R+56
All Local Stats
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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.