U.S. Senator John McCain and former Alaska Governor and vice presidential candidate Palin acknowledge...
U.S. Senator John McCain (R-AZ) and former Alaska Governor and vice presidential candidate Sarah Palin acknowledge the crowd during a campaign rally for McCain at the Pima County Fairgrounds in Tucson, Arizona March 26, 2010. McCain, who is seeking a fifth term as U.S. Senator, received Palin's endorsement and will challenge JD Hayworth during the Republican primary in August 2010. REUTERS/Joshua Lott (UNITED STATES - Tags: POLITICS)