President Barack Obama waves to supporters after speaking at a campaign event on Monday, Oct. 8, 2012, in San Francisco. (AP Photo/Noah Berger)
President Barack Obama speaks during a campaign event on Monday, Oct. 8, 2012, in San Francisco. (AP Photo/Noah Berger)
President Barack Obama speaks during a campaign event on Monday, Oct. 8, 2012, in San Francisco. (AP Photo/Noah Berger)
President Obama speaks during a campaign event on Monday, Oct. 8, 2012, in San Francisco. John Legend and Michael Franti performed at the event. (AP Photo/Noah Berger)
President Obama speaks during a campaign event on Monday, Oct. 8, 2012, in San Francisco. (AP Photo/Noah Berger)
President Obama speaks during a campaign event on Monday, Oct. 8, 2012, in San Francisco. (AP Photo/Noah Berger)
** FILE ** News Corp. CEO Rupert Murdoch delivers a keynote address at the National Summit on Education Reform on Friday, Oct. 14, 2011, in San Francisco. (AP Photo/Noah Berger)
Oakland police cover bodies of shooting victims near Oikos University in Oakland, Calif., on Monday, April 2, 2012. (AP Photo/Noah Berger)
Police officers arrest an Occupy protester who was blocking Wells Fargo's corporate headquarters on Friday, Jan. 20, 2012, in San Francisco. Anti-Wall Street demonstrators across the U.S. planned rallies Friday in front of banks and courthouses. (AP Photo/Noah Berger)
