Upper Preston leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 76% of adults in Upper Preston typically vote, above the U.S. average of about 62%. Among adults in Upper Preston, ~49% vote Democratic, ~26% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Upper Preston compares
Among cities within 25 miles, Upper Preston leans more Democratic than 42 of 74 neighbors.
Upper Preston runs about 11 points more Democratic than Washington as a whole.
Politics vary noticeably by neighborhood within Upper Preston. The north side runs the most Democratic (D+32) and the southeast side runs the most Republican (Even), a spread of about 33 points.
Why Upper Preston 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 Upper Preston, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 61% of adults in Upper Preston hold a bachelor's degree, about 33 points above the U.S. average of 28%.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; Upper Preston, WA sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Upper Preston looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Upper Preston 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 77%, about 17 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Upper Preston own their home, about 15 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Preston, WA D+28
- Snoqualmie, WA D+31
- Fall City, WA D+23
- Issaquah, WA D+42
- Spring Glen, WA D+25
- Klahanie, WA D+42
- Hobart, WA D+4
- North Bend, WA D+21
- Ellisville, WA D+16
- Sammamish, WA D+38
Cities with Similar Populations
- Wawpecong, IN R+60
- Columbia Falls, ME R+36
- Winslow, IL R+49
- Huntington, WI R+28
- Lost City, WV R+66
- Gypsy, KY R+71
- Palestine, IN R+64
- Mariaville, ME R+21
- Greenvale, TN R+66
- Easton, ME R+37
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.