Sunnyside leans Democratic by roughly 26 points: about 63% of voters vote Democratic and 37% Republican.
About 79% of adults in Sunnyside typically vote, above the U.S. average of about 62%. Among adults in Sunnyside, ~50% vote Democratic, ~29% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Sunnyside compares
Among neighborhoods within 5 miles, Sunnyside leans more Democratic than 7 of 15 neighbors.
Sunnyside runs about 11 points more Democratic than Oregon as a whole.
Politics vary noticeably by block within Sunnyside. The northwest side is the most Democratic-leaning (D+36) and the south side is the least Democratic-leaning (D+11), a spread of about 24 points.
Why Sunnyside leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Sunnyside. The lean here lands roughly where demographic data alone would predict.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Sunnyside, Clackamas, OR does.
Why turnout in Sunnyside looks the way it does
Turnout in Sunnyside 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
- West Mt. Scott, Happy Valley, OR D+23
- Rock Creek, Clackamas, OR D+10
- Southgate, Portland, OR D+20
- North Clackamas, Oatfield, OR D+13
- Linwood, Milwaukie, OR D+25
- Pleasant Valley, Portland, OR D+21
- Brentwood-Darlington, Portland, OR D+37
- Lents, Portland, OR D+33
- Lewelling, Milwaukie, OR D+39
- Lake Road, Milwaukie, OR D+40
Neighborhoods with Similar Populations
- Glendale-Heatherdowns, Toledo, OH D+24
- Radburn, Fair Lawn, NJ D+8
- Cleveland Park, Washington, DC D+77
- Alderwood Manor, Lynnwood, WA D+23
- Near Southside, Columbus, OH D+72
- Muscoy, San Bernardino, CA D+20
- Mission-Garin, Hayward, CA D+43
- La Sierra Acres, Riverside, CA D+8
- North Deering, Portland, ME D+46
- Highland Hills, Henderson, NV R+9
Sources and methodology
Precinct-level voting records used to fit the model come from Oregon Secretary of State, Elections Division, 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.