Corte Madera is a Democratic stronghold. About 78% of voters here vote Democratic and 22% Republican.
About 88% of adults in Corte Madera typically vote, above the U.S. average of about 62%. Among adults in Corte Madera, ~69% vote Democratic, ~19% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Corte Madera compares
Among cities within 25 miles, Corte Madera leans more Democratic than 55 of 74 neighbors.
Corte Madera runs about 36 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Corte Madera. The southwest side is the most Democratic-leaning (D+63) and the southeast side is the least Democratic-leaning (D+50), a spread of about 13 points.
Why Corte Madera 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 Corte Madera, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 78% of adults in Corte Madera hold a bachelor's degree, about 50 points above the U.S. average of 28%. Dense areas vote Democratic, and Corte Madera sits in the top fifth on density (about 84%, above 95% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Corte Madera, 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 Corte Madera looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Corte Madera 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Corte Madera have completed high school, above 95% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Larkspur, CA D+58
- Mill Valley, CA D+55
- San Quentin, CA D+41
- Greenbrae, CA D+51
- Kentfield, CA D+54
- Belvedere-Tiburon, CA D+42
- Tamalpais-Homestead Valley, CA D+62
- Tiburon, CA D+44
- Ross, CA D+52
- Belvedere, CA D+51
Cities with Similar Populations
- Dunlap, TN R+67
- Fort Lee, VA D+18
- Newport, OR D+29
- Avon, CO D+20
- Lake Monticello, VA Even
- Montville, NJ R+9
- Woodstock, MD D+40
- Williamston, MI R+2
- Andalusia, AL R+49
- East Troy, WI R+23
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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.