Oregon, WI Political Map | Democrat & Republican Areas in Oregon

By the BestNeighborhood data science team. Last updated May 2026.

Oregon leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.

 

About 98% of adults in Oregon typically vote, above the U.S. average of about 62%. Among adults in Oregon, ~61% vote Democratic, ~37% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.

How Oregon compares

Among cities within 25 miles, Oregon leans more Democratic than 50 of 64 neighbors.

Oregon runs about 26 points more Democratic than Wisconsin as a whole. Wisconsin is roughly evenly split, and Oregon sits clearly on the Democratic side.

Politics vary noticeably by neighborhood within Oregon. The west side is the most Democratic-leaning (D+34) and the east side is the least Democratic-leaning (D+13), a spread of about 21 points.

Why Oregon 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 Oregon, not a ranked or complete list of what matters most.

Areas with high college attainment vote Democratic. About 49% of adults in Oregon hold a bachelor's degree, about 21 points above the U.S. average of 28%. Dense areas vote Democratic, and Oregon sits in the top fifth on density (about 42%, above 85% of cities). Oregon runs against the grain of Wisconsin, a Democratic-leaning outlier in a roughly evenly split state.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Oregon, WI sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Oregon looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Oregon 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Oregon have completed high school, above 94% of cities. 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 Wisconsin Elections Commission, 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.