Three Rivers is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About more than 99% of adults in Three Rivers typically vote, above the U.S. average of about 62%. Among adults in Three Rivers, ~51% vote Democratic, ~55% Republican, and ~-6% don't vote. The map below shows estimated turnout by block group.
How Three Rivers compares
Among cities within 25 miles, Three Rivers leans more Republican than 3 of 9 neighbors.
Three Rivers runs about 19 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Three Rivers is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Three Rivers. The north side runs the most Democratic (D+11) and the southeast side runs the most Republican (R+23), a spread of about 34 points.
Why Three Rivers 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 Three Rivers, not a ranked or complete list of what matters most.
Three Rivers votes against the grain of Oregon. Oregon leans Democratic overall, while Three Rivers runs about 19 points more Republican.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Three Rivers, OR sits in the top tenth nationally on this measure.
Why turnout in Three Rivers looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Three Rivers 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 70%, about 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Three Rivers own their home, about 15 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and more than 99% of adults in Three Rivers have completed high school, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Deschutes, OR R+24
- Millican, OR R+25
- Sunriver, OR D+32
- Elk Lake, OR R+28
- La Pine, OR R+30
- Bend, OR D+16
- Gilchrist, OR R+48
- Tumalo, OR Even
- Deschutes Junction, OR R+17
- Crescent Lake Junction, OR R+37
Cities with Similar Populations
- Denver, IA R+30
- Caryville, TN R+65
- Mansfield, GA R+63
- Blowing Rock, NC D+3
- Malakoff, TX R+48
- Fort Branch, IN R+44
- Rock Island, TN R+69
- Moores Hill, IN R+61
- Rolling Prairie, IN R+40
- Cotuit, MA D+20
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.