Dewey leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 87% of adults in Dewey typically vote, above the U.S. average of about 62%. Among adults in Dewey, ~41% vote Democratic, ~46% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Dewey compares
Among cities within 25 miles, Dewey leans more Republican than 38 of 55 neighbors.
Dewey runs about 25 points more Republican than Washington as a whole. Washington leans Democratic overall, while Dewey is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Dewey. The north side runs the most Democratic (D+18) and the south side runs the most Republican (R+14), a spread of about 32 points.
Why Dewey 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 Dewey, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 80% of households in Dewey are family households, about 14 points above the U.S. average of 67%. Dewey runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Dewey, WA sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Dewey looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Dewey 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 66%, about 6 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Dewey have completed high school, above 92% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- La Conner, WA D+25
- Anacortes, WA D+21
- Oak Harbor, WA R+5
- Rexville, WA D+9
- Penn Cove Park, WA R+9
- Richardson, WA D+55
- Guemes, WA D+64
- Bay View, WA R+12
- Big Lake, WA D+3
Cities with Similar Populations
- Collins, MO R+68
- Birchrunville, PA D+10
- Lancaster, OR R+26
- Dennehotso, AZ D+57
- Battle Creek, IA R+59
- West Elkton, OH R+66
- Colony, AL R+55
- Marshfield, VT D+12
- Folkstone, NC R+43
- Tildenville, FL D+13
All Local Stats
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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.