Highline leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 52% of adults in Highline typically vote, below the U.S. average of about 62%. Among adults in Highline, ~36% vote Democratic, ~17% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How Highline compares
Among neighborhoods within 5 miles, Highline is the least Democratic-leaning.
Highline runs about 19 points more Democratic than Washington as a whole.
Politics vary noticeably by block within Highline. The northwest side is the most Democratic-leaning (D+44) and the southwest side is the least Democratic-leaning (D+33), a spread of about 11 points.
Why Highline leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Highline. 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; Highline, Seattle, WA sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Highline looks the way it does
Turnout in Highline 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.
Nearby Neighborhoods
Neighborhoods with Similar Populations
- Catholic University-Brookland, Washington, DC D+81
- Park Heights, Baltimore, MD D+86
- Centennial, Portland, OR D+19
- Great Bridge, Chesapeake, VA R+11
- West Valley, Boise, ID Even
- Belmont, Bronx, NY D+43
- East Broad, Black Lick, OH D+33
- Kyle Canyon, Las Vegas, NV Even
- East Boston, Boston, MA D+38
- North End, St. Paul, MN D+45
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.