St. Joe is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 61% of adults in St. Joe typically vote, near the U.S. average of about 62%. Among adults in St. Joe, ~11% vote Democratic, ~50% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How St. Joe compares
Among cities within 25 miles, St. Joe leans more Republican than 22 of 25 neighbors.
St. Joe runs about 27 points more Republican than Idaho as a whole.
Politics vary noticeably by neighborhood within St. Joe. The west side is the most Republican-leaning (R+70) and the east side is the least Republican-leaning (R+41), a spread of about 29 points.
Why St. Joe 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 St. Joe, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 4% of residents in St. Joe live in densely developed areas, about 14 points below the Idaho average of 18%.
Population density and Republican lean
Places with low population density tend to lean Republican; St. Joe, ID sits in the bottom quarter nationally on this measure.
Why turnout in St. Joe looks the way it does
Areas with low high-school completion turn out at lower rates. About 82% of adults in St. Joe have completed high school, about 8 points below the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- St. Maries, ID R+59
- Santa, ID R+69
- Calder, ID R+41
- Medimont, ID R+57
- Rocky Point, ID R+60
- Fernwood, ID R+67
- Pinehurst, ID R+45
- Cataldo, ID R+53
- Kingston, ID R+49
Cities with Similar Populations
- Mitchell, LA R+85
- Seaboard, AL R+77
- Etlah, MO R+65
- Fox Hill, AR R+65
- Overlook, NY R+32
- Maurine, SD R+82
- Knights Landing, ME R+35
- Reedtown, AL R+31
- Rosebud, IL R+60
- Neshoba, MS R+73
Sources and methodology
Precinct-level voting records used to fit the model come from Idaho 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.