Democrat Barack Obama swept Republican rival Senator John McCain in several key battlegrounds, scoring a landslide victory. Obama beat McCain in at least eight states that went Republican in 2004: Indiana, Colorado, Florida, Iowa, Nevada, New Mexico, Ohio and Virginia. Obama also beat McCain in the swing states of Pennsylvania and New Hampshire, giving him an Electoral College lead of 349 to McCain’s 162. McCain was quick to offer a concession speech, addressing supporters in his home state of Arizona. He urged Americans to unite behind an Obama White House. We play an excerpt. [includes rush transcript]