Casco leans heavily Republican by roughly 44 points: about 28% of voters vote Democratic and 72% Republican.
About 78% of adults in Casco typically vote, above the U.S. average of about 62%. Among adults in Casco, ~22% vote Democratic, ~56% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Casco compares
Among cities within 25 miles, Casco leans more Republican than 34 of 52 neighbors.
Casco runs about 43 points more Republican than Wisconsin as a whole.
Why Casco leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Casco. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Casco, 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 Casco looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Casco 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 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Casco own their home, about 16 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Rio Creek, WI R+42
- Euren, WI R+41
- Lincoln, WI R+41
- Luxemburg, WI R+45
- Thiry Daems, WI R+43
- Tonet, WI R+42
- Neuern, WI R+48
- Walhain, WI R+43
- Rostok, WI R+49
- Rosiere, WI R+37
Cities with Similar Populations
- Orlinda, TN R+63
- Mendon, NY D+5
- Tuckasegee, NC R+31
- Frenstat, TX R+62
- Pine Level, AL R+64
- Tonica, IL R+40
- Cumberland, OH R+63
- Marietta, MS R+86
- Mineral Springs, AR D+14
- North Pekin, IL R+31
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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.