Jamesburg is a true toss-up. About 52% of voters here vote Democratic and 48% Republican.
About 53% of adults in Jamesburg typically vote, below the U.S. average of about 62%. Among adults in Jamesburg, ~28% vote Democratic, ~25% Republican, and ~47% don't vote. The map below shows estimated turnout by block group.
How Jamesburg compares
Among cities within 25 miles, Jamesburg leans more Democratic than 5 of 20 neighbors.
Jamesburg runs about 17 points more Republican than California as a whole.
Politics vary noticeably by neighborhood within Jamesburg. The northwest side runs the most Democratic (D+15) and the southeast side runs the most Republican (R+12), a spread of about 27 points.
Why Jamesburg leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Jamesburg. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; Jamesburg, CA sits in the bottom tenth nationally on this measure.
Why turnout in Jamesburg looks the way it does
Renters vote less often than owners. About 39% of households in Jamesburg rent, about 14 points above the U.S. average of 25%. Low high-school completion lines up with lower turnout, and about 84% of adults in Jamesburg have completed high school, below 84% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Gonzales, CA D+21
- Soledad, CA D+22
- Posts, CA D+62
- Carmel Valley, CA D+30
- Big Sur, CA D+61
- Carmel Valley Village, CA D+31
- Greenfield, CA D+28
- Chualar, CA Even
- Metz, CA R+3
Cities with Similar Populations
- Zenith, IL R+71
- Crucible, PA R+43
- Salcha, AK R+24
- Hunterdale, VA R+38
- Wolf Lake, MN R+59
- North Royalton, VT D+21
- Sumner, MS D+38
- Le Boeuf Gardens, PA R+44
- Crescent, WI R+44
- Port Penn, DE R+4
All Local Stats
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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.