Chevron Corp. supported several candidates in Richmond, Calif., where the company has been hoping to modernize a large oil refinery, seen here in 2010. None of the Chevron-backed candidates were elected. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

A Bay Area Rapid Transit (BART) train sits in the Rockridge station on Friday in Oakland, Calif. San Francisco Bay Area commuters were bracing for the possibility of a BART strike as a 30-day contract extension was set to expire Sunday at midnight. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Frustrated commuters wait at the Transbay Temporary Terminal in San Francisco to catch a bus over to Oakland on Tuesday. Alan Greenblatt/NPR hide caption

itoggle caption Alan Greenblatt/NPR

The Fruitvale BART station is closed Monday due to a strike in Oakland, Calif. Negotiations between unions and management broke off late Sunday despite the request of California Gov. Jerry Brown in a last-ditch effort to reach a deal. Ben Margot/AP hide caption

itoggle caption Ben Margot/AP