Rexburg, ID Political Map | Democrat & Republican Areas in Rexburg

By the BestNeighborhood data science team. Last updated May 2026.

Rexburg leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.

 

About 52% of adults in Rexburg typically vote, below the U.S. average of about 62%. Among adults in Rexburg, ~18% vote Democratic, ~34% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.

How Rexburg compares

Among cities within 25 miles, Rexburg is the least Republican-leaning.

Rexburg runs about 5 points more Democratic than Idaho as a whole.

Politics vary noticeably by neighborhood within Rexburg. The southwest side is the most Republican-leaning (R+67) and the east side is the least Republican-leaning (R+32), a spread of about 35 points.

Why Rexburg 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 Rexburg, not a ranked or complete list of what matters most.

Rexburg votes Republican even though it is densely developed (about 74%, far above the Idaho average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here.

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Rexburg, ID sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Rexburg looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Rexburg is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 67% of households in Rexburg rent, compared to around 21% in nearby cities. High food insecurity lines up with lower turnout, and about 23% of adults in Rexburg report food insecurity, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.