Fairfield leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 67% of adults in Fairfield typically vote, near the U.S. average of about 62%. Among adults in Fairfield, ~24% vote Democratic, ~43% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Fairfield compares
Among cities within 25 miles, Fairfield leans more Republican than 56 of 88 neighbors.
Fairfield runs about 42 points more Republican than Oregon as a whole. Oregon leans Democratic overall, while Fairfield is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Fairfield. The southwest side is the most Republican-leaning (R+33) and the east side is the least Republican-leaning (R+20), a spread of about 12 points.
Why Fairfield 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 Fairfield, not a ranked or complete list of what matters most.
Fairfield votes against the grain of Oregon. Oregon leans Democratic overall, while Fairfield runs about 42 points more Republican.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; Fairfield, OR sits in the bottom tenth nationally on this measure.
Why turnout in Fairfield looks the way it does
Turnout in Fairfield 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
- Unionvale, OR R+33
- Hopewell, OR R+32
- Waconda, OR R+42
- West Woodburn, OR R+36
- Dayton, OR R+25
- St. Paul, OR R+21
- Gervais, OR R+21
- Eola Village, OR R+24
- Wheatland, OR R+39
- Amity, OR R+28
Cities with Similar Populations
- Littleport, IA R+39
- Thor, MN R+40
- Rotavele, CA R+27
- Kayford, WV R+59
- Bluff City, KY R+55
- Prathersville, MO R+42
- Joker, WV R+66
- Galt, IL R+34
- North Santiam, OR R+45
- Danripple, VA R+30
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.