Cascade leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 89% of adults in Cascade typically vote, above the U.S. average of about 62%. Among adults in Cascade, ~29% vote Democratic, ~60% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How Cascade compares
Among cities within 25 miles, Cascade leans more Republican than 16 of 53 neighbors.
Cascade runs about 22 points more Republican than Iowa as a whole.
Politics vary noticeably by neighborhood within Cascade. The northwest side is the most Republican-leaning (R+40) and the east side is the least Republican-leaning (R+27), a spread of about 13 points.
Why Cascade 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 Cascade, not a ranked or complete list of what matters most.
Cascade votes Republican even though it is densely developed (about 21%, modestly above the Iowa average of 16%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Cascade, IA sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Cascade looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cascade 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Cascade have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fillmore, IA R+42
- Scotch Grove, IA R+37
- Worthington, IA R+47
- Sand Springs, IA R+40
- Bernard, IA R+43
- Monticello, IA R+21
- Farley, IA R+39
- Epworth, IA R+36
- Monmouth, IA R+43
Cities with Similar Populations
- Stockdale, TX R+58
- Jamestown, MI R+37
- Waynesburg, OH R+47
- Cumberland Gap, TN R+60
- Brookston, IN R+42
- Terra Alta, WV R+65
- Ridgway, CO D+10
- Caledonia, IL R+15
- Waterloo, IN R+51
- Decatur, AR R+63
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Sources and methodology
Precinct-level voting records used to fit the model come from Iowa Secretary of State, Elections, 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.