East Pasadena leans heavily Democratic by roughly 34 points: about 67% of voters vote Democratic and 33% Republican.
About 70% of adults in East Pasadena typically vote, above the U.S. average of about 62%. Among adults in East Pasadena, ~47% vote Democratic, ~23% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How East Pasadena compares
Among cities within 25 miles, East Pasadena leans more Democratic than 89 of 130 neighbors.
East Pasadena runs about 13 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within East Pasadena. The northwest side is the most Democratic-leaning (D+37) and the southwest side is the least Democratic-leaning (D+24), a spread of about 13 points.
Why East Pasadena leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for East Pasadena, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in East Pasadena live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and East Pasadena sits in the top quarter (about 55%, above 96% of cities). A high never-married share predicts Democratic voting, and about 38% of adults in East Pasadena have never been married, above 91% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; East Pasadena, 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 East Pasadena looks the way it does
Turnout in East Pasadena sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sierra Madre, CA D+30
- Arcadia, CA D+14
- San Marino, CA D+21
- Temple City, CA D+13
- San Gabriel, CA D+19
- Kinneloa Mesa, CA D+16
- Pasadena, CA D+51
- Monrovia, CA D+27
- South Pasadena, CA D+52
- Alhambra, CA D+28
Cities with Similar Populations
- Gwinn, MI R+19
- Holdrege, NE R+50
- Selkirk, NY Even
- Guadalupe, AZ D+40
- Williamson, NY R+25
- Adamsville, AL D+31
- Swanton, VT R+28
- Heflin, AL R+80
- Corcoran, MN R+12
- Olathe, CO R+49
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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.