Gore: "We Need Change"

The former vice president makes his debut in the presidential campaign as he introduces Obama at a Detroit rally. Offers his endorsement and hearty support. Calls the nomination fight a historic process and calls for a respectful general election campaign. But adds that the U.S. doesn't need four more years of George Bush's policies. Also commends Obama for opposing the war in Iraq. Watch the endorsement here. Obama tells the crowd that "I cannot bring about the change by myself". McCain camp responds: "At an event meant to show unity, Barack Obama couldn’t unify his lofty rhetoric with the inconvenient truth that he voted for the Bush-Cheney energy bill he condemns..." Full statement. Plus: Gore also appears with Obama at Detroit fundraiser before the rally. Read pool report here. And: TIME's Jay Newton-Small asks whether Georgia can be Obama's Ohio.