Barack Obama has picked Joseph Biden, a six-term U.S. Senator from Delaware and the Chairman of the Senate Foreign Relations Committee, as the Democratic nominee for Vice President, according to published reports. Obama is expected to formally announce his selection of Biden this morning at a rally at the Old State Capitol building in Springfield, Illinois. Biden, 66, ran for President this year, but dropped out of the race after losing the Iowa caucus to Obama. He has served in the Senate since January, 1973.