Jackson County is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 76% of adults in Jackson County typically vote, above the U.S. average of about 62%. Among adults in Jackson County, ~37% vote Democratic, ~39% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Jackson County compares
Jackson County runs about 17 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Jackson County sits closer to the political middle.
Politics vary noticeably by city within Jackson County. The southeast side runs the most Democratic (D+49) and the northeast side runs the most Republican (R+40), a spread of about 89 points.
Why Jackson County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Jackson County, not a ranked or complete list of what matters most.
Jackson County votes against the grain of Oregon. Oregon leans Democratic overall, while Jackson County runs about 17 points more Republican.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Jackson County, OR sits in the top tenth nationally on this measure.
Why turnout in Jackson County looks the way it does
Turnout in Jackson County 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 Counties
- Josephine County, OR R+25
- Siskiyou County, CA R+17
- Klamath County, OR R+33
- Douglas County, OR R+29
- Curry County, OR R+11
- Del Norte County, CA R+15
- Coos County, OR R+10
- Lane County, OR D+21
- Trinity County, CA R+14
- Lake County, OR R+61
Counties with Similar Populations
- Shelby County, AL R+36
- New Hanover County, NC D+5
- Cabarrus County, NC R+7
- Montgomery County, TN R+16
- Richmond City, VA D+65
- Jefferson County, MO R+39
- Whatcom County, WA D+23
- Dona Ana County, NM D+4
- Tuscaloosa County, AL R+9
- Hinds County, MS D+52
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.