Democratic presidential hopeful US Senator Barack Obama (R) greets former US Senator and presidential hopeful John Edwards (L) during a rally at Van Andel Arena in Grand Rapids, Michigan. Democratic front-runner Barack Obama scored a coup Wednesday in his White House nominating battle against Hillary Clinton by winning the high-profile endorsement of blue-collar champion John Edwards.
(AFP/Getty Images/Mark Wilson)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., right, speaks as he is joined by former Democratic presidential hopeful John Edwards at a rally in Grand Rapids, Mich., Wednesday, May 14, 2008. Edwards endorsed Obama. (AP Photo/Jae C. Hong)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., left, and former Democratic presidential hopeful, John Edwards, wave to the crowd Wednesday, May 14, 2008 in Grand Rapids, Mich. after Edwards announced his endorsement of Obama as the Democratic presidential nominee.
(AP Photo Adam Bird)
Democratic presidential hopeful, Sen. Barack Obama, D-Ill., left, and former Democratic presidential hopeful, John Edwards, acknowledge supporters after a rally in Grand Rapids, Mich., Wednesday, May 14, 2008. (AP Photo/Jae C. Hong)