Sommerset West-Elmonica South, Hillsboro, OR Political Map | Democrat & Republican Areas in Sommerset West-Elmonica South

Sommerset West-Elmonica South leans heavily Democratic by roughly 44 points: about 72% of voters vote Democratic and 28% Republican.

 
Sommerset West-Elmonica South, Hillsboro, OR block-group political-lean map
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About 55% of adults in Sommerset West-Elmonica South typically vote, below the U.S. average of about 62%. Among adults in Sommerset West-Elmonica South, ~40% vote Democratic, ~15% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.

Sommerset West-Elmonica South, Hillsboro, OR block-group voter-turnout map
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How Sommerset West-Elmonica South compares

Among neighborhoods within 5 miles, Sommerset West-Elmonica South leans more Democratic than 7 of 9 neighbors.

Sommerset West-Elmonica South runs about 30 points more Democratic than Oregon as a whole.

Politics vary noticeably by block within Sommerset West-Elmonica South. The northeast side is the most Democratic-leaning (D+47) and the southwest side is the least Democratic-leaning (D+35), a spread of about 12 points.

Why Sommerset West-Elmonica South leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Sommerset West-Elmonica South. The lean here lands roughly where demographic data alone would predict.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Sommerset West-Elmonica South, Hillsboro, OR sits above the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Sommerset West-Elmonica South looks the way it does

Renters vote less often than owners. About 78% of households in Sommerset West-Elmonica South rent, about 53 points above the U.S. average of 25%. Learn more about the findings and methodology on the political spectrum map.

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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.