Sandin Hills, San Bernardino, CA Political Map | Democrat & Republican Areas in Sandin Hills

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

Sandin Hills leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.

 

About 42% of adults in Sandin Hills typically vote, below the U.S. average of about 62%. Among adults in Sandin Hills, ~24% vote Democratic, ~18% Republican, and ~58% don't vote. The map below shows estimated turnout by block group.

How Sandin Hills compares

Among neighborhoods within 5 miles, Sandin Hills leans more Democratic than 9 of 36 neighbors.

Sandin Hills runs about 5 points more Republican than California as a whole.

Politics vary noticeably by block within Sandin Hills. The northwest side is the most Democratic-leaning (D+22) and the east side is the least Democratic-leaning (D+7), a spread of about 15 points.

Why Sandin Hills leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Sandin Hills. The lean here lands roughly where demographic data alone would predict.

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Sandin Hills, San Bernardino, CA sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.

Why turnout in Sandin Hills looks the way it does

Crowded housing lines up with lower turnout. About 16% of homes in Sandin Hills have more than one occupant per room, above 97% of neighborhoods. Low high-school completion lines up with lower turnout, and about 84% of adults in Sandin Hills have completed high school, below 78% of neighborhoods. 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.