U.S. Democratic presidential candidate Barack Obama (D-IL)(R) and his chief strategist David Axelrod (L) fly from Chicago to St Paul, June 3, 2008, en route to Obama's final primary night rally in St Paul. The United States is holding its final democratic primaries in South Dakota and Montana on Tuesday. REUTERS/Jason Reed (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)