Duvall leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 90% of adults in Duvall typically vote, above the U.S. average of about 62%. Among adults in Duvall, ~53% vote Democratic, ~37% Republican, and ~10% don't vote. The map below shows estimated turnout by block group.
How Duvall compares
Among cities within 25 miles, Duvall leans more Democratic than 26 of 75 neighbors.
Politically, Duvall sits close to the rest of Washington.
Politics vary noticeably by neighborhood within Duvall. The southwest side runs the most Democratic (D+30) and the northeast side runs the most Republican (R+3), a spread of about 33 points.
Why Duvall 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 Duvall, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 52% of adults in Duvall hold a bachelor's degree, about 24 points above the U.S. average of 28%. Dense areas vote Democratic, and Duvall sits in the top fifth on density (about 59%, above 90% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Duvall, WA sits in the top tenth nationally 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 Duvall looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Duvall is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 74%, about 14 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Duvall own their home, above 80% of cities. High high-school completion lines up with higher turnout, and about 96% of adults in Duvall have completed high school, above 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lake Marcel-Stillwater, WA D+27
- Stillwater, WA D+12
- Union Hill-Novelty Hill, WA D+33
- Carnation, WA D+16
- Cottage Lake, WA D+28
- Monroe Junction, WA R+16
- Monroe, WA R+3
- Redmond, WA D+45
- Woodinville, WA D+32
Cities with Similar Populations
- Little Falls, MN R+38
- Fort Campbell North, KY R+5
- Keyport, NJ R+6
- Moulton, AL R+74
- Gallipolis, OH R+50
- Farmington, MI D+26
- Stevensville, MD R+23
- Philadelphia, MS R+15
- Archdale, NC R+38
- Walden, NY R+11
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.