(CBS) One month before the first votes are cast in South Carolina, a new CBS News poll finds Republican Mike Huckabee with a comfortable, if not overwhelming, lead over Mitt Romney, and a Democratic race that is even closer, with Hillary Clinton and Barack Obama in a dead heat. Huckabee leads Romney by eight points among likely Republican primary voters, with Rudy Giuliani, Sen. John McCain and Fred Thompson virtually tied for third place. On the Democratic side, Obama, at 35 percent, and Clinton, at 34 percent, lead among the state's likely primary voters, with John Edwards in third at...