Emerald Lake Hills, Redwood City, CA Political Map | Democrat & Republican Areas in Emerald Lake Hills

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

Emerald Lake Hills is a Democratic stronghold. About 77% of voters here vote Democratic and 23% Republican.

 

About 79% of adults in Emerald Lake Hills typically vote, above the U.S. average of about 62%. Among adults in Emerald Lake Hills, ~61% vote Democratic, ~18% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.

How Emerald Lake Hills compares

Among neighborhoods within 5 miles, Emerald Lake Hills leans more Democratic than 5 of 11 neighbors.

Emerald Lake Hills runs about 33 points more Democratic than California as a whole.

Politics vary noticeably by block within Emerald Lake Hills. The southeast side is the most Democratic-leaning (D+64) and the southwest side is the least Democratic-leaning (D+50), a spread of about 15 points.

Why Emerald Lake Hills 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 Emerald Lake Hills, not a ranked or complete list of what matters most.

Areas with high college attainment vote Democratic. About 76% of adults in Emerald Lake Hills hold a bachelor's degree, about 47 points above the U.S. average of 28%.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Emerald Lake Hills, Redwood City, CA sits in the top 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 Emerald Lake Hills looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Emerald Lake Hills is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 78%, about 18 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 89% of households in Emerald Lake Hills own their home, compared to around 49% in nearby neighborhoods. High high-school completion lines up with higher turnout, and about 98% of adults in Emerald Lake Hills have completed high school, above 85% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

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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.