West Lake Sammamish leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 69% of adults in West Lake Sammamish typically vote, above the U.S. average of about 62%. Among adults in West Lake Sammamish, ~49% vote Democratic, ~20% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How West Lake Sammamish compares
Among neighborhoods within 5 miles, West Lake Sammamish leans more Democratic than 7 of 17 neighbors.
West Lake Sammamish runs about 24 points more Democratic than Washington as a whole.
Why West Lake Sammamish leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for West Lake Sammamish, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in West Lake Sammamish hold a bachelor's degree, about 48 points above the U.S. average of 28%.
High-school completion, developed land, and voter turnout
Places that combine high-school-completion-heavy adults and a rural land-use pattern tend to turn out at a higher rate, as West Lake Sammamish, Bellevue, WA does.
Why turnout in West Lake Sammamish looks the way it does
Areas with strong routine healthcare access turn out at higher rates. West Lake Sammamish 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in West Lake Sammamish have completed high school, above 90% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Lake Hills, Bellevue, WA D+43
- Eastgate, Bellevue, WA D+42
- Crossroads, Bellevue, WA D+44
- Tam O'shanter, Bellevue, WA D+44
- Lakemont, Bellevue, WA D+41
- Wilburton, Bellevue, WA D+41
- Woodbridge, Bellevue, WA D+42
- Somerset, Bellevue, WA D+46
- Factoria, Bellevue, WA D+40
- Interlake, Bellevue, WA D+49
Neighborhoods with Similar Populations
- Woodlands at Fiore, Buffalo Grove, IL D+26
- South Park, Des Moines, IA D+14
- Arrowhead Park, Brick, NJ R+33
- West Acres, Fargo, ND D+21
- Centerville Historic District, Centerville, OH R+3
- The Gulch, Nashville, TN D+11
- Charles Page, Tulsa, OK R+12
- South Elmwood, Providence, RI D+28
- Campus Commons, Sacramento, CA D+48
- St Denis, Catonsville, MD D+18
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.