La Sierra South is a true toss-up. About 50% of voters here vote Democratic and 50% Republican.
About 53% of adults in La Sierra South typically vote, below the U.S. average of about 62%. Among adults in La Sierra South, ~26% vote Democratic, ~26% Republican, and ~48% don't vote. The map below shows estimated turnout by block group.
How La Sierra South compares
Among neighborhoods within 5 miles, La Sierra South sits roughly in the middle of the political spectrum, with 2 neighbors leaning further in the place's direction and 9 leaning the other way.
La Sierra South runs about 20 points more Republican than California as a whole.
Politics vary noticeably by block within La Sierra South. The northwest side runs the most Democratic (D+5) and the southwest side runs the most Republican (R+6), a spread of about 12 points.
Why La Sierra South leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in La Sierra South. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; La Sierra South, Riverside, CA sits in the top quarter nationally on this measure.
Why turnout in La Sierra South looks the way it does
Crowded housing lines up with lower turnout. About 8% of homes in La Sierra South have more than one occupant per room, above 88% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- La Sierra, Riverside, CA D+9
- Arlington South, Riverside, CA R+2
- Home Gardens, Corona, CA D+6
- Arlington, Riverside, CA D+11
- La Sierra Acres, Riverside, CA D+8
- La Sierra Hills, Riverside, CA Even
- Arlanza, Riverside, CA D+15
- Presidential Park, Riverside, CA D+5
- Ramona, Riverside, CA D+7
- Arlington Heights, Riverside, CA R+8
Neighborhoods with Similar Populations
- Back Creek Church Road, Charlotte, NC D+62
- Alamo Placita, Denver, CO D+64
- Rose Garden, San Jose, CA D+46
- Central Omaha, Omaha, NE D+24
- Western Branch South, Chesapeake, VA D+18
- Marcy Holmes, Minneapolis, MN D+59
- Westwood, Denver, CO D+39
- Mid City South, Baton Rouge, LA D+5
- Mariposa, Glendale, CA D+9
- Frankford, Baltimore, MD D+81
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.