Rubidoux, CA Political Map | Democrat & Republican Areas in Rubidoux

By the BestNeighborhood data science team. Last updated May 2026.

Rubidoux leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.

 

About 43% of adults in Rubidoux typically vote, below the U.S. average of about 62%. Among adults in Rubidoux, ~23% vote Democratic, ~20% Republican, and ~57% don't vote. The map below shows estimated turnout by block group.

How Rubidoux compares

Among cities within 25 miles, Rubidoux leans more Democratic than 59 of 72 neighbors.

Rubidoux runs about 12 points more Republican than California as a whole.

Politics vary noticeably by neighborhood within Rubidoux. The east side runs the most Democratic (D+20) and the west side runs the most Republican (R+5), a spread of about 25 points.

Why Rubidoux 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 Rubidoux, not a ranked or complete list of what matters most.

Dense areas vote Democratic. About 89% of residents in Rubidoux live in densely developed areas, about 52 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 44% of adults in Rubidoux have never been married, above 96% of cities.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Rubidoux, CA sits in the top tenth nationally on this measure.

Why turnout in Rubidoux looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Rubidoux is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 34% of households in Rubidoux rent, above 89% of cities. High food insecurity lines up with lower turnout, and about 29% of adults in Rubidoux report food insecurity, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.

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.