Edison Historic District leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 29% of adults in Edison Historic District typically vote, below the U.S. average of about 62%. Among adults in Edison Historic District, ~20% vote Democratic, ~9% Republican, and ~71% don't vote. The map below shows estimated turnout by block group.
How Edison Historic District compares
Edison Historic District runs about 15 points more Democratic than California as a whole.
Why Edison Historic District 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 Edison Historic District, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 48% of adults in Edison Historic District have never been married, modestly above similar-sized neighborhoods (around 42%). Density combined with diversity predicts Democratic voting, and non-Hispanic white share in Edison Historic District is about 4%, compared to around 22% in nearby neighborhoods.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Edison Historic District, Pomona, CA sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Edison Historic District looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Edison Historic District 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 46%, about 16 points below the California average of 62%. Renters vote less often than owners, and about 67% of households in Edison Historic District rent, compared to around 44% in nearby neighborhoods. High food insecurity lines up with lower turnout, and about 36% of adults in Edison Historic District report food insecurity, above 90% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Downtown Pomona, Pomona, CA D+36
- Downtown Ontario, Ontario, CA D+24
- Walnut Valley, Diamond Bar, CA D+9
- Charter Oak, Covina, CA D+9
- Covina-Valley, Covina, CA D+18
- Brea-Olinda, Brea, CA R+3
- Bassett, West Puente Valley, CA D+31
- Victoria Gardens, Rancho Cucamonga, CA D+11
- La Habra City, La Habra, CA D+7
- Anaheim Hills, Anaheim, CA R+8
Neighborhoods with Similar Populations
- Greater Fifth Ward, Houston, TX D+63
- Welleby, Sunrise, FL D+21
- Fells Point, Baltimore, MD D+70
- Jackson Park, Milwaukee, WI D+24
- Deep Creek South, Chesapeake, VA D+4
- Six Forks, Raleigh, NC D+27
- Como, St. Paul, MN D+61
- Far North Dallas-Richardson, Richardson, TX D+29
- Rancho West, San Bernardino, CA D+18
- Huffman-O'Malley, Anchorage, AK D+18
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.