Tres Pinos, CA Political Map | Democrat & Republican Areas in Tres Pinos

By the BestNeighborhood data science team. Last updated May 2026.

Tres Pinos leans heavily Republican by roughly 34 points: about 33% of voters vote Democratic and 67% Republican.

 

About 55% of adults in Tres Pinos typically vote, below the U.S. average of about 62%. Among adults in Tres Pinos, ~18% vote Democratic, ~37% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.

How Tres Pinos compares

Among cities within 25 miles, Tres Pinos leans more Republican than 17 of 20 neighbors.

Tres Pinos runs about 55 points more Republican than California as a whole. California leans Democratic overall, while Tres Pinos is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Tres Pinos. The southeast side is the most Republican-leaning (R+49) and the west side is the least Republican-leaning (R+30), a spread of about 19 points.

Why Tres Pinos 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 Tres Pinos, not a ranked or complete list of what matters most.

Tres Pinos votes against the grain of California. California leans Democratic overall, while Tres Pinos runs about 55 points more Republican. Rural areas vote Republican, and Tres Pinos sits in the bottom quarter on density (about 3%, below 93% of cities).

Developed land and Republican lean

Places with a rural land-use pattern tend to lean Republican; Tres Pinos, CA sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Tres Pinos looks the way it does

Crowded housing lines up with lower turnout. About 7% of homes in Tres Pinos have more than one occupant per room, above 92% of cities. Strong routine healthcare access lines up with higher turnout, and Tres Pinos sits in the top quarter on routine-care measures. Learn more about the findings and methodology on the political spectrum map.

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.