Arlanza leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 38% of adults in Arlanza typically vote, below the U.S. average of about 62%. Among adults in Arlanza, ~22% vote Democratic, ~16% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.
How Arlanza compares
Among neighborhoods within 5 miles, Arlanza leans more Democratic than 12 of 14 neighbors.
Arlanza runs about 5 points more Republican than California as a whole.
Politics vary noticeably by block within Arlanza. The east side is the most Democratic-leaning (D+21) and the northwest side is the least Democratic-leaning (D+6), a spread of about 14 points.
Why Arlanza leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Arlanza. 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; Arlanza, Riverside, CA sits in the top quarter nationally on this measure.
Why turnout in Arlanza looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Arlanza is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 21%, about 11 points above the California average of 10%. High food insecurity lines up with lower turnout, and about 33% of adults in Arlanza report food insecurity, above 87% of neighborhoods. Low high-school completion lines up with lower turnout, and about 70% of adults in Arlanza have completed high school, below 94% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- La Sierra Acres, Riverside, CA D+8
- Arlington, Riverside, CA D+11
- Airport, Riverside, CA D+9
- Ramona, Riverside, CA D+7
- La Sierra Hills, Riverside, CA Even
- La Sierra, Riverside, CA D+9
- Arlington South, Riverside, CA R+2
- Presidential Park, Riverside, CA D+5
- Grand, Riverside, CA D+4
- La Sierra South, Riverside, CA Even
Neighborhoods with Similar Populations
- South, Raleigh, NC D+71
- Grand Crossing, Chicago, IL D+82
- West Central, Pasadena, CA D+54
- Fort Totten-Upper Northeast, Washington, DC D+83
- Central, Boston, MA D+53
- Ditmas Park, Brooklyn, NY D+69
- Eldridge-West Oaks, Houston, TX D+34
- Historic Filipinotown, Los Angeles, CA D+44
- Weston Ranch, Stockton, CA D+24
- Westside-Santa Barbara, Santa Barbara, CA D+52
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.