Democratic presidential candidate Sen. Barack Obama, D-Ill., and wife Michelle wave to supporters during an election-night rally at the Xcel Energy Center in St. Paul, Minn., June 3, 2008. Obama made history June 3, 2008, capturing the Democratic presidential nomination as the first black candidate to top a major-party ticket, after a giant-slaying win over Hillary Clinton. (Emmanuel Dunand/AFP/Getty Images)