Denver leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 95% of adults in Denver typically vote, above the U.S. average of about 62%. Among adults in Denver, ~33% vote Democratic, ~62% Republican, and ~5% don't vote. The map below shows estimated turnout by block group.
How Denver compares
Among cities within 25 miles, Denver leans more Republican than 9 of 46 neighbors.
Denver runs about 17 points more Republican than Iowa as a whole.
Why Denver 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 Denver, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 79% of households in Denver are family households, about 12 points above the U.S. average of 67%.
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 Denver, IA does.
Why turnout in Denver looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Denver 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in Denver have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Knittel, IA R+48
- Readlyn, IA R+43
- Janesville, IA R+27
- Waverly, IA R+13
- Bremer, IA R+42
- Tripoli, IA R+41
- North Cedar, IA R+19
- Cedar Falls, IA D+4
- Dunkerton, IA R+39
- Shell Rock, IA R+39
Cities with Similar Populations
- Three Rivers, OR R+5
- Caryville, TN R+65
- Malakoff, TX R+48
- Blowing Rock, NC D+3
- Mansfield, GA R+63
- Fort Branch, IN R+44
- Rock Island, TN R+69
- Moores Hill, IN R+61
- Cotuit, MA D+20
- Rolling Prairie, IN R+40
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.