Rancho Bernadino leans Democratic by roughly 16 points: about 58% of voters vote Democratic and 42% Republican.
About 74% of adults in Rancho Bernadino typically vote, above the U.S. average of about 62%. Among adults in Rancho Bernadino, ~43% vote Democratic, ~31% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Rancho Bernadino compares
Among neighborhoods within 5 miles, Rancho Bernadino leans more Democratic than 1 of 3 neighbors.
Politically, Rancho Bernadino sits close to the rest of California.
Politics vary noticeably by block within Rancho Bernadino. The southwest side is the most Democratic-leaning (D+23) and the northwest side is the least Democratic-leaning (D+7), a spread of about 17 points.
Why Rancho Bernadino 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 Rancho Bernadino, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 63% of adults in Rancho Bernadino hold a bachelor's degree, about 35 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Rancho Bernadino, San Diego, CA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Rancho Bernadino looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Rancho Bernadino is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Rancho Bernadino have completed high school, above 82% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Carmel Mountain, San Diego, CA D+26
- Black Mountain Ranch, San Diego, CA D+16
- Rancho Penasquitos, San Diego, CA D+21
- Felicita, Escondido, CA D+8
- Sabre Springs, San Diego, CA D+20
- Vineyard, Escondido, CA D+9
- Central Escondido, Escondido, CA D+18
- Scripps Ranch, San Diego, CA D+20
- Midway, Escondido, CA D+14
- Mira Mesa, San Diego, CA D+21
Neighborhoods with Similar Populations
- Far North, Columbus, OH D+26
- Bay Area, Corpus Christi, TX Even
- West Side, Newark, NJ D+53
- Clinton Hill, Brooklyn, NY D+69
- Unionport, Bronx, NY D+39
- Far West, Fort Worth, TX R+23
- Capitol Hill, Seattle, WA D+79
- Pacific, Stockton, CA D+24
- University, Columbus, OH D+56
- Morningside Heights, Manhattan, NY D+76
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.