Ione leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 57% of adults in Ione typically vote, near the U.S. average of about 62%. Among adults in Ione, ~18% vote Democratic, ~39% Republican, and ~43% don't vote. The map below shows estimated turnout by block group.
How Ione compares
Among cities within 25 miles, Ione leans more Republican than 41 of 55 neighbors.
Ione runs about 59 points more Republican than California as a whole. California leans Democratic overall, while Ione is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Ione. The southwest side is the most Republican-leaning (R+45) and the north side is the least Republican-leaning (R+34), a spread of about 11 points.
Why Ione 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 Ione, not a ranked or complete list of what matters most.
Ione votes Republican even though it is densely developed (about 38%, well below the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Ione runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Ione, CA sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Ione looks the way it does
Turnout in Ione sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Buena Vista, CA R+42
- Sunnybrook, CA R+40
- Carbondale, CA R+52
- Camanche North Shore, CA R+45
- Amador City, CA R+29
- Drytown, CA R+33
- Sutter Creek, CA R+29
- Campo Seco, CA R+49
- Jackson, CA R+32
- Wallace, CA R+49
Cities with Similar Populations
- Evansdale, IA R+10
- Baltimore, OH R+47
- Fort Leavenworth, KS R+8
- Acampo, CA R+46
- Mountain View, AR R+63
- Roeland Park, KS D+42
- Brooklet, GA R+54
- Oakhurst, NJ R+26
- Delmar, DE R+34
- Groveland, MA Even
Sources and methodology
Precinct-level voting records used to fit the model come from California 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.