RAND California Election Returns: District Definitions (out of date) California Voter Foundation map - CD05 (out of date) Interview of Paul Smith, Republican candidate for the 5th CD recorded July 15, 2008 in Sacramento, CA 05 Government of Contra Costa County, California Government of Lake County, California Government of Napa County, California Government of Solano County, California Government of Sonoma County, California Benicia, California Hercules, California Lakeport, California Martinez, California Napa, California Santa Rosa, California Sonoma, California Vallejo, California Yountville, California Constituencies established in 1885 1885 establishments in California