Rose Garden, San Jose, CA Political Map | Democrat & Republican Areas in Rose Garden

Rose Garden leans heavily Democratic by roughly 46 points: about 73% of voters vote Democratic and 27% Republican.

 
Rose Garden, San Jose, CA block-group political-lean map
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About 63% of adults in Rose Garden typically vote, near the U.S. average of about 62%. Among adults in Rose Garden, ~46% vote Democratic, ~17% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.

Rose Garden, San Jose, CA block-group voter-turnout map
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How Rose Garden compares

Among neighborhoods within 5 miles, Rose Garden leans more Democratic than 10 of 12 neighbors.

Rose Garden runs about 26 points more Democratic than California as a whole.

Politics vary noticeably by block within Rose Garden. The northeast side is the most Democratic-leaning (D+50) and the southwest side is the least Democratic-leaning (D+36), a spread of about 14 points.

Why Rose Garden leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Rose Garden, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in Rose Garden live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Rose Garden sits in the top quarter (about 57%, above 77% of neighborhoods).

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Rose Garden, San Jose, CA sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Rose Garden looks the way it does

Turnout in Rose Garden sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.