West Allis leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 75% of adults in West Allis typically vote, above the U.S. average of about 62%. Among adults in West Allis, ~43% vote Democratic, ~32% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How West Allis compares
Among cities within 25 miles, West Allis leans more Democratic than 73 of 85 neighbors.
West Allis runs about 15 points more Democratic than Wisconsin as a whole. Wisconsin is roughly evenly split, and West Allis sits clearly on the Democratic side.
Politics vary noticeably by neighborhood within West Allis. The northeast side is the most Democratic-leaning (D+23) and the northwest side is the least Democratic-leaning (D+3), a spread of about 20 points.
Why West Allis 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 West Allis, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in West Allis live in densely developed areas, about 63 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 40% of adults in West Allis have never been married, above 93% of cities. West Allis runs against the grain of Wisconsin, a Democratic-leaning outlier in a roughly evenly split state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; West Allis, WI sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in West Allis looks the way it does
Areas with strong routine healthcare access turn out at higher rates. West Allis 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 66%, about 6 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- West Milwaukee, WI D+28
- Greenfield, WI D+6
- Wauwatosa, WI D+38
- Elm Grove, WI D+10
- Milwaukee, WI D+18
- New Berlin, WI R+14
- Hales Corners, WI Even
- Greendale, WI D+4
- Brookfield, WI Even
- Butler, WI R+3
Cities with Similar Populations
- The Hammocks, FL R+22
- Lake Havasu City, AZ R+36
- Sheboygan, WI Even
- Weslaco, TX R+2
- Vineland, NJ D+7
- Grand Forks, ND Even
- Phenix City, AL R+3
- Lenexa, KS D+12
- Medina, OH R+20
- Coeur d'Alene, ID R+31
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.