NEWARK, NJ - JUNE 8: Newark Mayor Cory Booker speaks during a news conference on his plans to campaign for the Democratic nomination to run for the seat of late U.S. Sen. Frank Lautenberg on June 8, 2013 in Newark, New Jersey. New Jersey Governor Chris Christie has set October 16th as the date for a special election to determine who will fill Lautenberg's seat for a year.  (Photo by Ramin Talaie/Getty Images)