Tranquillity leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 49% of adults in Tranquillity typically vote, below the U.S. average of about 62%. Among adults in Tranquillity, ~26% vote Democratic, ~23% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How Tranquillity compares
Among cities within 25 miles, Tranquillity leans more Democratic than 17 of 19 neighbors.
Tranquillity runs about 11 points more Republican than California as a whole.
Politics vary noticeably by neighborhood within Tranquillity. The east side runs the most Democratic (D+15) and the northeast side runs the most Republican (R+19), a spread of about 33 points.
Why Tranquillity 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 Tranquillity, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 56% of residents in Tranquillity live in densely developed areas, about 19 points above the U.S. average of 36%.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Tranquillity, CA sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Tranquillity looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Tranquillity is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 38%, about 24 points below the California average of 62%. Renters vote less often than owners, and about 34% of households in Tranquillity rent, compared to around 57% in nearby cities. High food insecurity lines up with lower turnout, and about 47% of adults in Tranquillity report food insecurity, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- San Joaquin, CA D+24
- Mendota, CA D+12
- Cantua Creek, CA Even
- Kerman, CA R+6
- Helm, CA R+21
- Three Rocks, CA R+4
- La Vina, CA R+22
- Biola, CA R+21
- Rolinda, CA R+31
Cities with Similar Populations
- Cold Brook, NY R+39
- Big Cabin, OK R+65
- Sugar Notch, PA R+14
- New Douglas, IL R+50
- Hermitage, AR R+53
- Landers, CA R+22
- Sightly, WA R+40
- Eden, ID R+71
- Sharon, OK R+80
- Jennings, OK R+67
All Local Stats
Home Services
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.