Prosper leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About 91% of adults in Prosper typically vote, above the U.S. average of about 62%. Among adults in Prosper, ~40% vote Democratic, ~51% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Prosper compares
Among cities within 25 miles, Prosper leans more Republican than 10 of 28 neighbors.
Prosper runs about 26 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Prosper is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Prosper. The southeast side runs the most Democratic (D+12) and the east side runs the most Republican (R+15), a spread of about 26 points.
Why Prosper 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 Prosper, not a ranked or complete list of what matters most.
Prosper votes against the grain of Oregon. Oregon leans Democratic overall, while Prosper runs about 26 points more Republican.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Prosper, OR sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Prosper looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Prosper 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 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Winterville, OR R+17
- Bandon, OR D+3
- Randolph, OR R+12
- Twomile, OR R+9
- Dew Valley, OR R+9
- Riverton, OR R+30
- Coaledo, OR R+31
- Laurel Grove, OR R+9
- Coquille, OR R+17
- Charleston, OR R+11
Cities with Similar Populations
- Alexandria, MO R+60
- Recluse, WY R+80
- Ralston, WA R+63
- Sconondoa, NY R+36
- Terra, UT R+63
- Thayer, IN R+57
- Wade, MS R+87
- Schwer, IL R+68
- Clear, AK R+37
- Fishers Landing, AZ R+46
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.