Alessandro leans Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 34% of adults in Alessandro typically vote, below the U.S. average of about 62%. Among adults in Alessandro, ~22% vote Democratic, ~12% Republican, and ~66% don't vote. The map below shows estimated turnout by block group.
How Alessandro compares
Among neighborhoods within 5 miles, Alessandro leans more Democratic than 36 of 39 neighbors.
Alessandro runs about 9 points more Democratic than California as a whole.
Politics vary noticeably by block within Alessandro. The north side is the most Democratic-leaning (D+36) and the southwest side is the least Democratic-leaning (D+21), a spread of about 15 points.
Why Alessandro leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Alessandro, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Alessandro live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 51% of adults in Alessandro have never been married, above 82% of neighborhoods.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Alessandro, San Bernardino, CA sits in the top quarter nationally on this measure.
Why turnout in Alessandro looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Alessandro is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 41%, about 21 points below the California average of 62%. High food insecurity lines up with lower turnout, and about 38% of adults in Alessandro report food insecurity, above 92% of neighborhoods. High-crime urban areas turn out at lower rates, and Alessandro sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- La Plaza, San Bernardino, CA D+27
- Mount Vernon, San Bernardino, CA D+37
- Amtrak, San Bernardino, CA D+19
- Shirrells, San Bernardino, CA D+53
- Lytle Creek, San Bernardino, CA D+26
- Feldheym, San Bernardino, CA D+25
- SBHS, San Bernardino, CA D+27
- Terrace, San Bernardino, CA D+23
- Muscupiabe, San Bernardino, CA D+20
- Seccombe Lane, San Bernardino, CA D+30
Neighborhoods with Similar Populations
- Parkside, Camden, NJ D+79
- U of O Campus, Eugene, OR D+74
- Downtown Ashtabula, Ashtabula, OH Even
- Turtle Ridge, Irvine, CA R+6
- West Hills, Huntington, NY R+4
- Tyner Homes, Bakersfield, CA D+5
- Northgate, Seattle, WA D+65
- Newell South, Charlotte, NC D+44
- Cimarron, Rochester, MN D+25
- Hallsville, Manchester, NH D+21
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.