Fontana leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 97% of adults in Fontana typically vote, above the U.S. average of about 62%. Among adults in Fontana, ~46% vote Democratic, ~51% Republican, and ~3% don't vote. The map below shows estimated turnout by block group.
How Fontana compares
Among cities within 25 miles, Fontana leans more Republican than 9 of 99 neighbors.
Fontana runs about 5 points more Republican than Wisconsin as a whole.
Politics vary noticeably by neighborhood within Fontana. The west side is the most split-leaning (R+13) and the northwest side is the least split-leaning (Even), a spread of about 11 points.
Why Fontana 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 Fontana, not a ranked or complete list of what matters most.
Fontana votes Republican even though it is densely developed (about 33%, modestly above the Wisconsin average of 24%). Here an older population outweighs the Democratic lean that density usually predicts. A high family-household share predicts Republican voting, and about 75% of households in Fontana are family households, above 76% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Fontana, WI sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Fontana looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Fontana 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Fontana have completed high school, above 90% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Williams Bay, WI R+11
- Linton, WI R+37
- Fontana-on-Geneva Lake, WI R+2
- Walworth, WI R+18
- Como, WI R+16
- Lake Geneva, WI R+6
- Zenda, WI R+35
- Delavan Lake, WI R+22
- Inlet, WI R+29
- Honey Creek, WI R+36
Cities with Similar Populations
- New Hampton, MO R+70
- Mount Pleasant, MS R+32
- Rhodelia, KY R+61
- Delwood, WI R+26
- Elaine, AR D+17
- Center Hill, AR R+72
- Sand Point, AK D+9
- Clearview City, KS R+27
- Hamden, NY R+19
- Saco, MT R+63
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.