Irvine Health and Science Complex leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 38% of adults in Irvine Health and Science Complex typically vote, below the U.S. average of about 62%. Among adults in Irvine Health and Science Complex, ~23% vote Democratic, ~15% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.
How Irvine Health and Science Complex compares
Among neighborhoods within 5 miles, Irvine Health and Science Complex leans more Democratic than 16 of 19 neighbors.
Politically, Irvine Health and Science Complex sits close to the rest of California.
Politics vary noticeably by block within Irvine Health and Science Complex. The south side is the most Democratic-leaning (D+25) and the southeast side is the least Democratic-leaning (D+9), a spread of about 16 points.
Why Irvine Health and Science Complex 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 Irvine Health and Science Complex, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 67% of adults in Irvine Health and Science Complex hold a bachelor's degree, about 39 points above the U.S. average of 28%.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Irvine Health and Science Complex, Irvine, CA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Irvine Health and Science Complex looks the way it does
Renters vote less often than owners. More than 99% of households in Irvine Health and Science Complex rent, about 74 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 15% of homes in Irvine Health and Science Complex have more than one occupant per room, above 96% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Quail Hill, Irvine, CA D+15
- Oak Creek, Irvine, CA D+12
- Spectrum, Irvine, CA D+14
- El Toro Marine Air Station, Irvine, CA D+18
- Orange County Great Park, Irvine, CA D+19
- Woodbury, Irvine, CA D+16
- Woodbridge, Irvine, CA D+9
- El Camino Real, Irvine, CA D+10
- Turtle Rock, Irvine, CA D+11
- Portola Springs, Irvine, CA D+15
Neighborhoods with Similar Populations
- Saint Louis Hills, St. Louis, MO D+33
- Prattville, Chelsea, MA D+26
- Periwinkle, Albany, OR R+5
- Landover-Sharmel, Vancouver, WA D+22
- Morrell Park, Baltimore, MD D+22
- Federal Hill, Providence, RI D+60
- Circle Cross Ranch, San Tan Valley, AZ R+22
- Southside Flats, Pittsburgh, PA D+55
- Brooklyn-Centre, Cleveland, OH D+33
- Auburn, Cranston, RI 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.