Star leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 92% of adults in Star typically vote, above the U.S. average of about 62%. Among adults in Star, ~24% vote Democratic, ~68% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How Star compares
Among cities within 25 miles, Star leans more Republican than 7 of 28 neighbors.
Star runs about 11 points more Republican than Idaho as a whole.
Politics vary noticeably by neighborhood within Star. The northwest side is the most Republican-leaning (R+64) and the east side is the least Republican-leaning (R+36), a spread of about 28 points.
Why Star 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 Star, not a ranked or complete list of what matters most.
Star votes Republican even though it is densely developed (about 58%, far above the Idaho average of 18%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 78% of households in Star are family households, above 85% of cities.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Star, ID sits in the top tenth nationally on this measure.
Why turnout in Star looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Star is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Star have completed high school, above 91% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Middleton, ID R+60
- Eagle, ID R+29
- Meridian, ID R+25
- Sunnyslope, ID R+47
- Knowlton Heights, ID R+49
- Caldwell, ID R+37
- Nampa, ID R+36
- Garden City, ID R+2
- Emmett, ID R+57
- Boise, ID R+20
Cities with Similar Populations
- Big Rapids, MI R+8
- Danville, PA R+18
- Northview, MI R+3
- Tarboro, NC D+16
- Corning, NY Even
- China Grove, NC R+51
- Northampton, MA D+79
- Cherry Hill, VA D+51
- Webb City, MO R+40
- Valley, AL R+30
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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.