Mattawa leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 31% of adults in Mattawa typically vote, below the U.S. average of about 62%. Among adults in Mattawa, ~15% vote Democratic, ~16% Republican, and ~69% don't vote. The map below shows estimated turnout by block group.
How Mattawa compares
Among cities within 25 miles, Mattawa is the least Republican-leaning.
Mattawa runs about 24 points more Republican than Washington as a whole. Washington leans Democratic overall, while Mattawa is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Mattawa. The northwest side runs the most Democratic (D+17) and the southeast side runs the most Republican (R+53), a spread of about 69 points.
Why Mattawa 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 Mattawa, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 11% of adults in Mattawa hold a bachelor's degree, about 23 points below the Washington average of 34%. A high family-household share predicts Republican voting, and about 77% of households in Mattawa are family households, above 83% of cities. Mattawa runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Mattawa, WA sits in the bottom quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Mattawa looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Mattawa is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 45%, about 20 points below the Washington average of 65%. Renters vote less often than owners, and about 49% of households in Mattawa rent, about 24 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Beverly, WA R+19
- Vantage, WA R+41
- Royal City, WA R+58
- Smyrna, WA R+57
- George, WA R+40
- Moxee, WA R+33
- Outlook, WA R+28
- Terrace Heights, WA R+23
- Zillah, WA R+31
- Sunnyside, WA D+4
Cities with Similar Populations
- Parkville, MO R+5
- Ocklawaha, FL R+54
- South Hamilton, MA D+26
- Clinton, IN R+42
- Lucas, TX R+34
- Upton, MA D+10
- Nibley, UT R+44
- Ligonier, IN R+40
- Churchville, NY R+15
- Union, OH R+30
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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.