Washington County is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 77% of adults in Washington County typically vote, above the U.S. average of about 62%. Among adults in Washington County, ~11% vote Democratic, ~65% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Washington County compares
Among counties within 50 miles, Washington County is the most Republican-leaning.
Washington County runs about 81 points more Republican than Colorado as a whole. Colorado leans Democratic overall, while Washington County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Washington County. The southeast side is the most Republican-leaning (R+80) and the west side is the least Republican-leaning (R+64), a spread of about 16 points.
Why Washington County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Washington County, not a ranked or complete list of what matters most.
Washington County votes against the grain of Colorado. Colorado leans Democratic overall, while Washington County runs about 81 points more Republican.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Washington County, CO sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Washington County looks the way it does
Turnout in Washington County 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 Counties
- Morgan County, CO R+37
- Yuma County, CO R+60
- Logan County, CO R+50
- Phillips County, CO R+53
- Kit Carson County, CO R+64
- Lincoln County, CO R+61
- Sedgwick County, CO R+50
- Cheyenne County, NE R+58
- Cheyenne County, KS R+71
- Deuel County, NE R+71
Counties with Similar Populations
- Carlisle County, KY R+69
- Jim Hogg County, TX R+2
- Dillingham Census Area, AK D+19
- Ouray County, CO D+13
- Craig County, VA R+64
- Calhoun County, AR R+61
- Musselshell County, MT R+64
- Scotland County, MO R+64
- Rooks County, KS R+66
- Custer County, CO R+33
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.