Denver leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 75% of adults in the Denver area typically vote, above the U.S. average of about 62%. Among adults in the Denver area, ~46% vote Democratic, ~29% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Denver compares
Among cities within 25 miles, Denver leans more Democratic than 51 of 65 neighbors.
Denver runs about 12 points more Democratic than Colorado as a whole.
Politics vary noticeably by neighborhood within Denver. The east side is the most Democratic-leaning (D+33) and the southeast side is the least Democratic-leaning (Even), a spread of about 31 points.
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.
Dense areas vote Democratic. About 87% of residents in the Denver area live in densely developed areas, about 51 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Denver sits in the top quarter (about 48%, above 93% of cities). A high never-married share predicts Democratic voting, and about 34% of adults in the Denver area have never been married, above 86% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Denver, CO sits in the top tenth nationally on this measure.
Why turnout in Denver looks the way it does
Turnout in the Denver area sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Glendale, CO D+43
- North Washington, CO Even
- Cherry Hills Village, CO Even
- Edgewater, CO D+39
- Mountain View, CO D+55
- Sheridan, CO D+16
- Berkley, CO D+31
- Derby, CO D+13
- Englewood, CO D+27
- Sherrelwood, CO D+22
Cities with Similar Populations
- Portland, OR D+25
- Baltimore, MD D+29
- St. Louis, MO D+6
- Tampa, FL R+6
- Brooklyn, NY D+34
- Orlando, FL D+3
- Charlotte, NC D+4
- San Diego, CA D+17
- San Antonio, TX D+4
- Pittsburgh, PA R+2
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Colorado 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.