Deep River, WA Political Map | Democrat & Republican Areas in Deep River

By the BestNeighborhood data science team. Last updated May 2026.

Deep River leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.

 

About 65% of adults in Deep River typically vote, near the U.S. average of about 62%. Among adults in Deep River, ~24% vote Democratic, ~41% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.

How Deep River compares

Among cities within 25 miles, Deep River leans more Republican than 24 of 39 neighbors.

Deep River runs about 43 points more Republican than Washington as a whole. Washington leans Democratic overall, while Deep River is one of the few Republican-leaning pockets.

Why Deep River 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 Deep River, not a ranked or complete list of what matters most.

Deep River votes against the grain of Washington. Washington leans Democratic overall, while Deep River runs about 43 points more Republican.

Paved land cover and Republican lean

Places with little paved surface tend to lean Republican; Deep River, WA 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 Deep River looks the way it does

Turnout in Deep River 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.

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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.