Lewisburg leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 98% of adults in Lewisburg typically vote, above the U.S. average of about 62%. Among adults in Lewisburg, ~66% vote Democratic, ~32% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How Lewisburg compares
Among cities within 25 miles, Lewisburg leans more Democratic than 58 of 59 neighbors.
Lewisburg runs about 19 points more Democratic than Oregon as a whole.
Why Lewisburg 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 Lewisburg, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 58% of adults in Lewisburg hold a bachelor's degree, about 29 points above the U.S. average of 28%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Lewisburg, OR sits in the top quarter nationally on this measure.
Why turnout in Lewisburg looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lewisburg 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%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Corvallis, OR D+54
- Adair Village, OR D+14
- Orleans, OR R+13
- Albany, OR R+2
- Palestine, OR D+5
- Oakville, OR R+36
- Wren, OR D+29
- Tangent, OR R+33
- Philomath, OR D+26
- Millersburg, OR R+38
Cities with Similar Populations
- Higdon, MO R+70
- Stokesdale, PA R+51
- Jewell Ridge, VA R+72
- Stratton, NE R+79
- Sherwood, TN R+58
- Middleton, GA R+62
- Olsonville, SD D+35
- Gladstone, IL R+29
- Goltry, OK R+79
- Roachester, OH R+49
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.