Lancaster leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 70% of adults in Lancaster typically vote, above the U.S. average of about 62%. Among adults in Lancaster, ~26% vote Democratic, ~44% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Lancaster compares
Among cities within 25 miles, Lancaster leans more Republican than 27 of 42 neighbors.
Lancaster runs about 40 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Lancaster is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Lancaster. The southeast side is the most Republican-leaning (R+60) and the south side is the least Republican-leaning (R+17), a spread of about 43 points.
Why Lancaster 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 Lancaster, not a ranked or complete list of what matters most.
Lancaster votes against the grain of Oregon. Oregon leans Democratic overall, while Lancaster runs about 40 points more Republican.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Lancaster, OR sits in the top quarter nationally on this measure.
Why turnout in Lancaster looks the way it does
Turnout in Lancaster 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 Cities
- Harrisburg, OR R+49
- Junction City, OR R+11
- Horton, OR R+21
- Riverview, OR R+28
- Miller, OR R+54
- Monroe, OR R+18
- Alvadore, OR R+20
- Cheshire, OR R+20
- Glenbrook, OR R+16
- Halsey, OR R+56
Cities with Similar Populations
- Colony, AL R+55
- Dennehotso, AZ D+57
- Birchrunville, PA D+10
- Dewey, WA R+7
- Battle Creek, IA R+59
- West Elkton, OH R+66
- Collins, MO R+68
- Walling, TN R+73
- Madisonville, MS R+45
- Claverack, NY R+5
All Local Stats
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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.