Article Photos: Clinton, Obama set aside rivalry for election



President Barack Obama walks to the Oval Office after arriving on Marine One on the South Lawn of the White House in Washington, Tuesday, Sept. 4, 2012. Obama is returning from campaigning in Norfolk, Va. (AP Photo/Susan Walsh)

President Barack Obama walks to the Oval Office after arriving on Marine One on the South Lawn of the White House in Washington, Tuesday, Sept. 4, 2012. Obama is returning from campaigning in Norfolk, Va. (AP Photo/Susan Walsh)