Lancaster leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About 78% of adults in Lancaster typically vote, above the U.S. average of about 62%. Among adults in Lancaster, ~30% vote Democratic, ~49% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Lancaster compares
Among cities within 25 miles, Lancaster leans more Republican than 6 of 56 neighbors.
Lancaster runs about 24 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Lancaster. The northeast side is the most Republican-leaning (R+40) and the west side is the least Republican-leaning (R+17), a spread of about 24 points.
Why Lancaster 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 Lancaster, not a ranked or complete list of what matters most.
Lancaster votes Republican even though it is densely developed (about 31%, modestly above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Lancaster, WI sits in the top quarter nationally on this measure.
Why turnout in Lancaster looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lancaster 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 63%, above 60% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Kieler, WI R+43
- Stitzer, WI R+41
- Mount Ida, WI R+43
- Beetown, WI R+46
- Potosi, WI R+37
- Fennimore, WI R+30
- Bloomington, WI R+42
- Tennyson, WI R+37
- Cornelia, WI R+37
- Mount Hope, WI R+43
Cities with Similar Populations
- Meadowview, VA R+59
- Kenneth City, FL R+16
- Clare, MI R+28
- Lonsdale, MN R+28
- Dilley, TX R+13
- Olalla, WA R+5
- Elverson, PA R+19
- Cambria, CA D+25
- Southold, NY Even
- Vernon, FL R+54
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Sources and methodology
Precinct-level voting records used to fit the model come from Wisconsin Elections Commission, 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.