On the Trail
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March 28, 2008 | On the Trail | Barack Obama, Chelsea Clinton, John McCain

On the Trail
Chelsea Clinton visits Olney Terminal in Philadelphia to campaign for her mother, Democratic presidential hopeful Sen. Hillary Rodham Clinton of New York. (Matt Rourke / Associated Press)
On the Trail
Chelsea Clinton, along with Philadelphia Mayor Michael Nutter, campaigns in the city for her mother, Sen. Hillary Rodham Clinton(Matt Rourke / Associated Press)
On the Trail | March 28, 2008
Democratic presidential hopeful Barack Obama poses with the cast of “The View” during a taping Thursday in New York for Friday’s show. With the Illinois senator, from left, are Whoopi Goldberg, Barbara Walters, Joy Behar, Sherri Shepherd and Elisabeth Hasselbeck. (Steve Fenn / Associated Press / ABC)
On the Trail | John McCain
Presumptive Republican nominee John McCain, left, accompanied by his former presidential rival Mitt Romney, speaks at a news conference in Salt Lake City. The two campaigned together in Utah and Colorado. (Danny La / Getty Images)
On the Trail
Romney campaigned with McCain, his former opponent in the presidential race, in Utah and Colorado. (Danny La / Getty Images)
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