Former Alaska Governor Sarah Palin signs her autograph during a campaign rally for U.S. Senator John...
Former Alaska Governor and vice presidential candidate Sarah Palin signs her autograph during a campaign rally for U.S. Senator John McCain (R-AZ) at Dobson High School in Mesa, Arizona March 27, 2010. McCain who is seeking a fifth term as U.S. Senator received Palin's endorsement yesterday and will challenge JD Hayworth during the Republican primary in August 2010. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS)