Blue River is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 71% of adults in Blue River typically vote, above the U.S. average of about 62%. Among adults in Blue River, ~34% vote Democratic, ~37% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Blue River compares
Among cities within 25 miles, Blue River leans more Republican than 1 of 4 neighbors.
Blue River runs about 19 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Blue River is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Blue River. The northeast side is the most Republican-leaning (R+49) and the southwest side is the least Republican-leaning (R+4), a spread of about 45 points.
Why Blue River 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 Blue River, not a ranked or complete list of what matters most.
Blue River votes against the grain of Oregon. Oregon leans Democratic overall, while Blue River runs about 19 points more Republican.
Population density and Republican lean
Places with low population density tend to lean Republican; Blue River, OR sits in the bottom tenth nationally on this measure.
Why turnout in Blue River looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Blue River 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Blue River have completed high school, above 90% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- McKenzie Bridge, OR R+3
- Vida, OR R+6
- Cascadia, OR R+49
- Walterville, OR R+9
- Foster, OR R+43
- Sweet Home, OR R+40
- Camp Sherman, OR R+3
Cities with Similar Populations
- Friendship, OH R+59
- Montandon, PA R+54
- Moody, ME D+3
- Parker, KS R+64
- Woodville, TN R+42
- Stewart, MS R+76
- Humboldt, OH R+60
- Tangipahoa, LA D+21
- Millwood, WV R+58
- Holmesville, MS R+25
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.