Compton is a Democratic stronghold. About 77% of voters here vote Democratic and 23% Republican.
About 40% of adults in Compton typically vote, below the U.S. average of about 62%. Among adults in Compton, ~31% vote Democratic, ~9% Republican, and ~60% don't vote. The map below shows estimated turnout by block group.
How Compton compares
Among cities within 25 miles, Compton leans more Democratic than 125 of 135 neighbors.
Compton runs about 33 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Compton. The northwest side is the most Democratic-leaning (D+63) and the south side is the least Democratic-leaning (D+45), a spread of about 18 points.
Why Compton 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 Compton, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Compton live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 46% of adults in Compton have never been married, above 97% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Compton, CA sits in the top tenth nationally on this measure.
Why turnout in Compton looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Compton is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 41% of households in Compton rent, about 17 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 36% of adults in Compton report food insecurity, above 98% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Willowbrook, CA D+54
- East Rancho Dominguez, CA D+43
- Lynwood, CA D+41
- Paramount, CA D+35
- South Gate, CA D+36
- Gardena, CA D+39
- West Athens, CA D+66
- Carson, CA D+38
- Florence-Graham, CA D+42
- Westmont, CA D+61
Cities with Similar Populations
- McDonough, GA D+22
- Plainfield, IL D+4
- Lafayette, IN Even
- Wichita Falls, TX R+26
- Quincy, MA D+28
- Lexington, SC R+36
- Duluth, MN D+31
- Germantown, MD D+48
- New Bedford, MA D+8
- Baytown, TX R+4
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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.