Obama officially introduces Biden as running mate

Barack Obama introduced Sen. Joe Biden of Delaware as his Democratic running mate Saturday before a cheering crowd of thousands, hailing him as a "leader who is ready to step in and be president." Within minutes, Biden went on the attack against Republican presidential candidate John McCain, saying he would have to "figure out which of the kitchen tables to sit at" when considering his own economic future. It was a reference to McCain's recent inartful admission that he was not sure how many homes he owns. Before a vast crowd spilling out from the front of the Old State Capitol, Obama said Biden was "what many others pretend to be - a statesman with sound judgment who doesn't have to hide behind bluster to keep America strong."