Henninger Park, Santa Ana, CA Political Map | Democrat & Republican Areas in Henninger Park

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

Henninger Park leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.

 

About 37% of adults in Henninger Park typically vote, below the U.S. average of about 62%. Among adults in Henninger Park, ~24% vote Democratic, ~13% Republican, and ~63% don't vote. The map below shows estimated turnout by block group.

How Henninger Park compares

Among neighborhoods within 5 miles, Henninger Park leans more Democratic than 27 of 33 neighbors.

Henninger Park runs about 12 points more Democratic than California as a whole.

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

Dense areas vote Democratic. More than 99% of residents in Henninger Park live in densely developed areas, about 64 points above the U.S. average of 36%.

Preventive-care access and voter turnout

Places with limited routine preventive-care access tend to turn out at a lower rate; Henninger Park, Santa Ana, CA sits in the bottom quarter 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 Henninger Park looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Henninger Park 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 49%, about 13 points below the California average of 62%. Renters vote less often than owners, and about 66% of households in Henninger Park rent, compared to around 50% in nearby neighborhoods. High food insecurity lines up with lower turnout, and about 34% of adults in Henninger Park report food insecurity, above 87% 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.