Kewaunee County leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 82% of adults in Kewaunee County typically vote, above the U.S. average of about 62%. Among adults in Kewaunee County, ~25% vote Democratic, ~57% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How Kewaunee County compares
Among counties within 50 miles, Kewaunee County leans more Republican than 6 of 7 neighbors.
Kewaunee County runs about 38 points more Republican than Wisconsin as a whole.
Politics vary noticeably by city within Kewaunee County. The southwest side is the most Republican-leaning (R+47) and the northeast side is the least Republican-leaning (R+21), a spread of about 26 points.
Why Kewaunee County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Kewaunee County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 70% of households in Kewaunee County are family households, above 78% of counties.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Kewaunee County, WI sits in the top tenth nationally on this measure.
Why turnout in Kewaunee County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Kewaunee County 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 87% of households in Kewaunee County own their home, above 98% of counties. High high-school completion lines up with higher turnout, and about 94% of adults in Kewaunee County have completed high school, above 87% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Brown County, WI R+4
- Door County, WI R+3
- Manitowoc County, WI R+24
- Oconto County, WI R+40
- Calumet County, WI R+23
- Outagamie County, WI R+13
- Marinette County, WI R+34
- Winnebago County, WI R+3
- Sheboygan County, WI R+15
- Menominee County, MI R+30
Counties with Similar Populations
- Buchanan County, IA R+36
- Colorado County, TX R+42
- Greene County, VA R+26
- Allen County, KY R+64
- Barnwell County, SC R+13
- Dukes County, MA D+41
- Meriwether County, GA R+22
- Adams County, WA R+31
- Hutchinson County, TX R+60
- Henry County, IA 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.