Contempo leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 49% of adults in Contempo typically vote, below the U.S. average of about 62%. Among adults in Contempo, ~32% vote Democratic, ~17% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How Contempo compares
Among neighborhoods within 5 miles, Contempo leans more Democratic than 1 of 11 neighbors.
Contempo runs about 10 points more Democratic than California as a whole.
Why Contempo 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 Contempo, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Contempo live in densely developed areas, about 64 points above the U.S. average of 36%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Contempo, Union City, 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 Contempo looks the way it does
Turnout in Contempo 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 Neighborhoods
- Ardenwood, Fremont, CA D+36
- Tennyson-Alquire, Hayward, CA D+35
- Fairway Park, Hayward, CA D+36
- Glen Eden, Hayward, CA D+33
- Mission-Garin, Hayward, CA D+43
- Harder-Tennyson, Hayward, CA D+37
- Whitman-Mocine, Hayward, CA D+33
- Southgate, Hayward, CA D+39
- Mt Eden, Hayward, CA D+30
- Jackson Triangle, Hayward, CA D+38
Neighborhoods with Similar Populations
- Wade, Raleigh, NC D+44
- Buckman, Portland, OR D+80
- Lauderdale Lakes West Gate, Lauderdale Lakes, FL D+65
- Schuylerville, Bronx, NY D+11
- Bay View, Norfolk, VA D+19
- Fairlington-Shirlington, Arlington, VA D+64
- Northwest Crossing, San Antonio, TX D+13
- Logan, Spokane, WA D+30
- River West, Bend, OR D+45
- Adams Park, Atlanta, GA D+86
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.