San Isabel leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 80% of adults in San Isabel typically vote, above the U.S. average of about 62%. Among adults in San Isabel, ~28% vote Democratic, ~52% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How San Isabel compares
Among cities within 25 miles, San Isabel leans more Republican than 5 of 11 neighbors.
San Isabel runs about 40 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while San Isabel is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within San Isabel. The east side is the most Republican-leaning (R+43) and the south side is the least Republican-leaning (R+22), a spread of about 21 points.
Why San Isabel 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 San Isabel, not a ranked or complete list of what matters most.
San Isabel votes against the grain of Colorado. Colorado leans Democratic overall, while San Isabel runs about 40 points more Republican. Rural areas vote Republican, and San Isabel sits in the bottom quarter on density (about 3%, below 93% of cities).
Population density and Republican lean
Places with low population density tend to lean Republican; San Isabel, CO sits in the bottom quarter nationally on this measure.
Why turnout in San Isabel looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in San Isabel 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 Cities
- Rye, CO R+36
- Colorado City, CO R+38
- Beulah, CO R+26
- Fairview, CO R+40
- Gardner, CO R+21
- Lascar, CO R+21
- Wetmore, CO R+42
- Farisita, CO R+20
- Westcliffe, CO R+32
- Swallows, CO R+31
Cities with Similar Populations
- Cooksburg, PA R+57
- Sharpsburg, IA R+53
- Mexico, PA R+63
- Millville, WV R+17
- Hardscrabble, IN R+48
- Hard Rocks, AZ D+55
- Maple Ridge, OH R+56
- Verona Beach, NY R+40
- Portland, CO R+47
- Sag Bridge, IL R+22
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.