Cedarburg leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 97% of adults in Cedarburg typically vote, above the U.S. average of about 62%. Among adults in Cedarburg, ~46% vote Democratic, ~51% Republican, and ~3% don't vote. The map below shows estimated turnout by block group.
How Cedarburg compares
Among cities within 25 miles, Cedarburg leans more Republican than 18 of 79 neighbors.
Cedarburg runs about 4 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Cedarburg. The southeast side runs the most Democratic (D+5) and the northwest side runs the most Republican (R+24), a spread of about 29 points.
Why Cedarburg 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 Cedarburg, not a ranked or complete list of what matters most.
Cedarburg votes Republican even though it is densely developed (about 64%, far above the Wisconsin average of 24%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Cedarburg, WI does.
Why turnout in Cedarburg looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cedarburg 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in Cedarburg have completed high school, above 97% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Grafton, WI R+7
- Horns Corners, WI R+26
- Kirchhayn, WI R+45
- Lakefield, WI R+13
- Thiensville, WI D+6
- Mequon, WI D+4
- Saukville, WI R+23
- Jackson, WI R+28
- Germantown, WI R+13
- Port Washington, WI R+9
Cities with Similar Populations
- Chardon, OH R+32
- Johnson City, NY D+8
- Morton, IL R+25
- Byron, GA R+26
- Lakeland North, WA D+16
- Spring Creek, NV R+64
- Tehachapi, CA R+29
- Chestnut Hill, MA D+60
- Johnstown, CO R+32
- London, OH R+34
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.