ABC News and the Associated Press project Barack Obama has clinched the Democratic presidential nomination, becoming the first black candidate to lead a major party into a campaign for the White House.
Hillary Rodham Clinton swiftly signaled her interest in joining his ticket as running mate. Obama sealed his nomination victory Tuesday, based on public declarations from many "superdelegates" as well as private support from others who confirmed their intentions to The Associated Press.
The Associated Press contributed to this report.