Del Mar Heights leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 85% of adults in Del Mar Heights typically vote, above the U.S. average of about 62%. Among adults in Del Mar Heights, ~61% vote Democratic, ~25% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Del Mar Heights compares
Among neighborhoods within 5 miles, Del Mar Heights leans more Democratic than 3 of 4 neighbors.
Del Mar Heights runs about 21 points more Democratic than California as a whole.
Politics vary noticeably by block within Del Mar Heights. The south side is the most Democratic-leaning (D+45) and the northwest side is the least Democratic-leaning (D+32), a spread of about 13 points.
Why Del Mar Heights 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 Del Mar Heights, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 78% of adults in Del Mar Heights hold a bachelor's degree, about 49 points above the U.S. average of 28%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Del Mar Heights, Del Mar, CA sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Del Mar Heights looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Del Mar Heights 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 78%, about 18 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Carmel Valley, San Diego, CA D+29
- North City, San Diego, CA D+24
- Sorrento Valley, San Diego, CA D+26
- Torrey Pines, San Diego, CA D+55
- La Jolla Village, La Jolla, CA D+45
- University City, San Diego, CA D+44
- Mira Mesa, San Diego, CA D+21
- Rancho Penasquitos, San Diego, CA D+21
- Black Mountain Ranch, San Diego, CA D+16
- Miramar, San Diego, CA R+20
Neighborhoods with Similar Populations
- North College Park, Seattle, WA D+68
- Seven Hills, Aurora, CO D+12
- Eldorado Village, Largo, FL R+12
- Cedar Hills, Jacksonville, FL D+17
- Durfee, Detroit, MI D+85
- West Avenue, Miami Beach, FL D+5
- Brightmoor, Detroit, MI D+82
- Wheeless Road, Augusta, GA D+63
- Californial Heights, Long Beach, CA D+46
- North Marketview Heights, Rochester, NY D+67
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.