Cambridge is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 67% of adults in Cambridge typically vote, near the U.S. average of about 62%. Among adults in Cambridge, ~9% vote Democratic, ~58% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Cambridge compares
Among cities within 25 miles, Cambridge leans more Republican than 5 of 6 neighbors.
Cambridge runs about 38 points more Republican than Idaho as a whole.
Why Cambridge 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 Cambridge, not a ranked or complete list of what matters most.
Rural areas vote Republican. About 2% of residents in Cambridge live in densely developed areas, about 16 points below the Idaho average of 18%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Cambridge, ID 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 Cambridge looks the way it does
High high-school completion lines up with higher turnout, and about 96% of adults in Cambridge have completed high school, above 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Goodrich, ID R+69
- Midvale, ID R+76
- Indian Valley, ID R+71
- Mesa, ID R+63
- Council, ID R+58
- Fruitvale, ID R+63
- Pine, OR R+44
- Oxbow, OR R+39
- Weiser, ID R+52
- Jonathan, ID R+60
Cities with Similar Populations
- Peterson, MN R+32
- Hayesville, OH R+58
- Caryville, FL R+61
- Dewar, OK R+58
- Raymondville, MO R+69
- Clinton, MN R+37
- Wyndale, VA R+61
- Kings Station, NY D+5
- Brush Creek, TN R+67
- Republic, MI R+17
All Local Stats
Home Services
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.