Shirley leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 72% of adults in Shirley typically vote, above the U.S. average of about 62%. Among adults in Shirley, ~22% vote Democratic, ~50% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Shirley compares
Among cities within 25 miles, Shirley leans more Republican than 22 of 85 neighbors.
Shirley runs about 36 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Shirley. The southwest side is the most Republican-leaning (R+40) and the northwest side is the least Republican-leaning (R+19), a spread of about 21 points.
Why Shirley 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 Shirley, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 85% of residents in Shirley drive to work alone, about 11 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 78% of households in Shirley are family households, above 85% of cities.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Shirley, WI sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Shirley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Shirley 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 76%, about 16 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lark, WI R+49
- Langes Corners, WI R+44
- Morrison, WI R+48
- Greenleaf, WI R+42
- Bellevue, WI R+9
- Denmark, WI R+41
- DePere, WI R+8
- Stangelville, WI R+43
- Allouez, WI D+8
- Wayside, WI R+50
Cities with Similar Populations
- Zap, ND R+76
- Grainfield, KS R+82
- Tyaskin, MD R+25
- Emmaville, PA R+76
- Lambert, MO R+63
- Long Creek, OR R+59
- Fairdale, PA R+54
- Ridgely, MO R+49
- Bonham, MO R+66
- Prosperity, FL R+81
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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.