Pasco leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 58% of adults in Pasco typically vote, near the U.S. average of about 62%. Among adults in Pasco, ~26% vote Democratic, ~32% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How Pasco compares
Among cities within 25 miles, Pasco is the least Republican-leaning.
Pasco runs about 28 points more Republican than Washington as a whole. Washington leans Democratic overall, while Pasco is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Pasco. The southeast side runs the most Democratic (D+14) and the northeast side runs the most Republican (R+71), a spread of about 85 points.
Why Pasco 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 Pasco, not a ranked or complete list of what matters most.
Pasco votes Republican even though it is densely developed (about 86%, far above the Washington average of 41%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 80% of households in Pasco are family households, above 89% of cities. Pasco runs against the grain of Washington, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Pasco, WA sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Pasco looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Pasco is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 21%, about 12 points above the Washington average of 9%. Renters vote less often than owners, and about 29% of households in Pasco rent, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Kennewick, WA R+21
- Richland, WA R+9
- Finley, WA R+41
- Burbank, WA R+54
- West Richland, WA R+30
- Benton City, WA R+44
- Eltopia, WA R+70
- Kiona, WA R+54
- Wallula, WA R+57
- Wallula Junction, WA R+50
Cities with Similar Populations
- Waipahu, HI D+10
- Evanston, IL D+76
- Farmington Hills, MI D+25
- Camarillo, CA D+8
- Santa Clarita, CA Even
- Alhambra, CA D+28
- Dallas, GA R+25
- Upland, CA Even
- Lithonia, GA D+81
- Buena Park, CA D+8
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Washington Secretary of State, Elections, 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.