 Major cities in the district included Santa Barbara, San Luis Obispo, Ventura, and Oxnard.Before redistricting by the California Citizens Redistricting Commission in 2011, California's 23rd Congressional District was one of the narrowest districts in the United States, stretching along the Pacific coast from Oxnard to the Monterey County line.It was often referred to as "the district that disappears at high tide" or the "ribbon of shame".