Shirley Basin is a Republican stronghold. About 12% of voters here vote Democratic and 88% Republican.
About 45% of adults in Shirley Basin typically vote, below the U.S. average of about 62%. Among adults in Shirley Basin, ~5% vote Democratic, ~40% Republican, and ~55% don't vote. The map below shows estimated turnout by block group.
How Shirley Basin compares
Among cities within 25 miles, Shirley Basin leans more Republican than 3 of 4 neighbors.
Shirley Basin runs about 30 points more Republican than Wyoming as a whole.
Politics vary noticeably by neighborhood within Shirley Basin. The northeast side is the most Republican-leaning (R+80) and the east side is the least Republican-leaning (R+52), a spread of about 28 points.
Why Shirley Basin 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 Shirley Basin, not a ranked or complete list of what matters most.
Rural areas vote Republican. Fewer than 1% of residents in Shirley Basin live in densely developed areas, about 11 points below the Wyoming average of 12%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Shirley Basin, WY sits in the bottom tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Shirley Basin looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Shirley Basin is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Low high-school completion lines up with lower turnout, and about 86% of adults in Shirley Basin have completed high school, below 76% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sinclair, WY R+80
- Rawlins, WY R+52
- Saratoga, WY R+54
- Hanna, WY R+73
- Elk Mountain, WY R+71
- Encampment, WY R+50
- Riverside, WY R+48
- Leo, WY R+75
- Savery, WY R+73
Cities with Similar Populations
- Woolum, AR R+63
- Woodson, OR R+33
- Phlegar, VA R+66
Sources and methodology
Precinct-level voting records used to fit the model come from Wyoming 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.