Melba is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 64% of adults in Melba typically vote, near the U.S. average of about 62%. Among adults in Melba, ~9% vote Democratic, ~55% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Melba compares
Among cities within 25 miles, Melba leans more Republican than 15 of 17 neighbors.
Melba runs about 35 points more Republican than Idaho as a whole.
Why Melba 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 Melba, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 78% of households in Melba are family households, about 12 points above the U.S. average of 67%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Melba, ID sits below the national average on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Melba looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Melba is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Mora, ID R+49
- Kuna, ID R+50
- Reynolds, ID R+74
- Nampa, ID R+36
- Murphy, ID R+74
- Marsing, ID R+64
- Meridian, ID R+25
- Knowlton Heights, ID R+49
- Caldwell, ID R+37
- Huston, ID R+67
Cities with Similar Populations
- Yorkville, NY R+4
- Elkhart Lake, WI R+29
- Mead, OK R+66
- Pine, CO R+4
- Shelbyville, MI R+36
- Centuria, WI R+35
- Spartansburg, PA R+60
- Fowlers Mill, OH R+26
- Scott Depot, WV R+50
- Ocean Grove, NJ D+34
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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.