Walla Walla County leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 66% of adults in Walla Walla County typically vote, near the U.S. average of about 62%. Among adults in Walla Walla County, ~30% vote Democratic, ~36% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Walla Walla County compares
Among counties within 50 miles, Walla Walla County is the least Republican-leaning.
Walla Walla County runs about 26 points more Republican than Washington as a whole. Washington leans Democratic overall, while Walla Walla County is one of the few Republican-leaning pockets.
Politics vary noticeably by city within Walla Walla County. The east side runs the most Democratic (Even) and the northwest side runs the most Republican (R+54), a spread of about 55 points.
Why Walla Walla 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 Walla Walla County, not a ranked or complete list of what matters most.
Walla Walla County votes Republican even though it is densely developed (about 64%, well above the Washington average of 41%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Walla Walla County runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Walla Walla County, WA sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Walla Walla County looks the way it does
Turnout in Walla Walla 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
- Columbia County, WA R+51
- Umatilla County, OR R+34
- Franklin County, WA R+16
- Benton County, WA R+21
- Garfield County, WA R+58
- Union County, OR R+33
- Adams County, WA R+31
- Morrow County, OR R+36
- Asotin County, WA R+29
- Wallowa County, OR R+20
Counties with Similar Populations
- Laurel County, KY R+63
- Stanly County, NC R+47
- Knox County, OH R+48
- Athens County, OH D+8
- Barry County, MI R+34
- Union County, OH R+30
- Garfield County, OK R+43
- Eddy County, NM R+49
- Hall County, NE R+26
- Darlington County, SC R+8
Sources and methodology
Precinct-level voting records used to fit the model come from Washington 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.