Southeast Boulder is a Democratic stronghold. About 85% of voters here vote Democratic and 15% Republican.
About 71% of adults in Southeast Boulder typically vote, above the U.S. average of about 62%. Among adults in Southeast Boulder, ~61% vote Democratic, ~11% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Southeast Boulder compares
Among neighborhoods within 5 miles, Southeast Boulder leans more Democratic than 3 of 8 neighbors.
Southeast Boulder runs about 58 points more Democratic than Colorado as a whole.
Why Southeast Boulder leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Southeast Boulder, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 74% of adults in Southeast Boulder hold a bachelor's degree, about 46 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 61% of adults in Southeast Boulder have never been married, above 94% of neighborhoods.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Southeast Boulder, Boulder, CO sits in the top tenth nationally on this measure.
Why turnout in Southeast Boulder looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in Southeast Boulder have completed high school, about 6 points above the Colorado average of 93%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Colorado University, Boulder, CO D+62
- South Boulder, Boulder, CO D+76
- East Boulder, Boulder, CO D+61
- Crossroads, Boulder, CO D+73
- Central Boulder, Boulder, CO D+71
- Washington Village, Boulder, CO D+77
- Palo Park, Boulder, CO D+64
- North Boulder, Boulder, CO D+72
- Walnut Grove, Broomfield, CO D+15
- Brandywine, Broomfield, CO D+24
Neighborhoods with Similar Populations
- The Plaza, Long Beach, CA D+18
- Fox Chase-Burholme, Philadelphia, PA D+7
- Sixteen Acres, Springfield, MA D+20
- Haddington-Carroll Park, Philadelphia, PA D+88
- Fort Bend Houston, Missouri City, TX D+68
- Roseway, Portland, OR D+75
- Ravenswood Manor, Chicago, IL D+63
- Green Valley South, Henderson, NV D+8
- Charles Village, Baltimore, MD D+79
- Northwest Dallas, Dallas, TX D+11
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.