Lewiston is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 56% of adults in Lewiston typically vote, below the U.S. average of about 62%. Among adults in Lewiston, ~7% vote Democratic, ~49% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How Lewiston compares
Among cities within 25 miles, Lewiston leans more Republican than 30 of 48 neighbors.
Lewiston runs about 52 points more Republican than Utah as a whole.
Why Lewiston 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 Lewiston, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 87% of households in Lewiston are family households, about 20 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Lewiston, UT sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Lewiston looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in Lewiston have more than one occupant per room, above 93% of cities. Strong routine healthcare access lines up with higher turnout, and Lewiston sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Richmond, UT R+67
- Franklin, ID R+77
- Cornish, UT R+75
- Trenton, UT R+71
- Whitney, ID R+77
- Amalga, UT R+69
- Weston, ID R+82
- Preston, ID R+75
- Smithfield, UT R+51
- Mapleton, ID R+79
Cities with Similar Populations
- Donalds, SC R+56
- White Stone, VA R+15
- John Day, OR R+52
- Hambden, OH R+43
- Fairlawn, VA R+19
- Hagerman, ID R+63
- Roberta, GA R+29
- Fredonia, PA R+54
- Edinburg, PA R+45
- Slate Hill, NY R+26
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from Utah Lieutenant Governor's Office, 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.