....an oversized sample shows Huckabee slipping and no longer ahead of Romney. A private corporate interest commissioned a phone-bank survey of 15,000 Iowans who will attend Republican caucuses Jan. 3....showed Romney with 30%, Huckabee 26%. Sen. John McCain was third with 12%, Rudy Giuliani fourth at 9%. Fred Thompson had 1%, with slightly fewer votes than Rep. Ron Paul (also at 1%)....McCain was the leading second-choice candidate for both Huckabee and Romney voters.