Knightsen leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 27% of adults in Knightsen typically vote, below the U.S. average of about 62%. Among adults in Knightsen, ~11% vote Democratic, ~16% Republican, and ~73% don't vote. The map below shows estimated turnout by block group.
How Knightsen compares
Among cities within 25 miles, Knightsen leans more Republican than 44 of 49 neighbors.
Knightsen runs about 41 points more Republican than California as a whole. California leans Democratic overall, while Knightsen is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Knightsen. The south side is the most Republican-leaning (R+31) and the northeast side is the least Republican-leaning (R+8), a spread of about 23 points.
Why Knightsen 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 Knightsen, not a ranked or complete list of what matters most.
Knightsen votes Republican even though it is densely developed (about 21%, far below the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 87% of households in Knightsen are family households, above 98% of cities. Knightsen runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; Knightsen, CA sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Knightsen looks the way it does
Crowded housing lines up with lower turnout. About 7% of homes in Knightsen have more than one occupant per room, above 93% of cities. Low high-school completion lines up with lower turnout, and about 84% of adults in Knightsen have completed high school, below 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Oakley, CA D+2
- Brentwood, CA D+7
- Bethel Island, CA R+15
- Discovery Bay, CA R+12
- Byron, CA R+27
- Antioch, CA D+34
- Bridgehead, CA R+8
- Holt, CA R+19
- Isleton, CA R+13
- Pittsburg, CA D+38
Cities with Similar Populations
- South Chatham, MA D+33
- West Union, MN R+59
- Linden, IN R+55
- Burtrum, MN R+61
- Spur, TX R+67
- Leadwood, MO R+55
- Carrizozo, NM R+23
- Germania Gardens, NJ R+3
- Robie Creek, ID R+48
- Bascom, OH R+52
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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.