Fremont County is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 78% of adults in Fremont County typically vote, above the U.S. average of about 62%. Among adults in Fremont County, ~13% vote Democratic, ~65% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Fremont County compares
Among counties within 50 miles, Fremont County leans more Republican than 4 of 5 neighbors.
Fremont County runs about 30 points more Republican than Idaho as a whole.
Politics vary noticeably by city within Fremont County. The south side is the most Republican-leaning (R+71) and the north side is the least Republican-leaning (R+48), a spread of about 23 points.
Why Fremont 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 Fremont County, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 77% of households in Fremont County are family households, about 11 points above the U.S. average of 67%.
Renting and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Fremont County, ID sits in the bottom quarter nationally on this measure.
Why turnout in Fremont County looks the way it does
Homeowners vote more often than renters. About 82% of households in Fremont County own their home, about 7 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Madison County, ID R+35
- Jefferson County, ID R+71
- Teton County, ID R+21
- Clark County, ID R+65
- Bonneville County, ID R+43
- Teton County, WY D+16
- Bingham County, ID R+54
- Butte County, ID R+75
- Bannock County, ID R+25
- Caribou County, ID R+73
Counties with Similar Populations
- Monroe County, OH R+63
- Pend Oreille County, WA R+38
- Hughes County, OK R+53
- Archuleta County, CO R+14
- Madison County, TX R+43
- Buffalo County, WI R+32
- Bamberg County, SC D+18
- Johnson County, IL R+41
- Moffat County, CO R+52
- Martinsville City, VA D+22
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.