98315 is a true toss-up. About 51% of voters here vote Democratic and 49% Republican.
About 40% of adults in 98315 typically vote, below the U.S. average of about 62%. Among adults in 98315, ~20% vote Democratic, ~20% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.
How 98315 compares
Among zip codes within 15 miles, 98315 sits roughly in the middle of the political spectrum, with 2 neighbors leaning further in the place's direction and 16 leaning the other way.
98315 runs about 15 points more Republican than Washington as a whole.
Politics vary noticeably by block within 98315. The west side is the most Democratic-leaning (D+20) and the southwest side is the least Democratic-leaning (Even), a spread of about 19 points.
Why 98315 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 98315. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 98315, WA sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 98315 looks the way it does
Renters vote less often than owners. About 98% of households in 98315 rent, about 73 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 99% of adults in 98315 have completed high school, above 96% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.