GOP U.S. Senate candidates gunning for front-runner Mitt Romney

SALT LAKE CITY — A dozen Republicans jumped into the U.S. Senate race before Thursday's candidate filing deadline — many of them saying they're gunning for Mitt Romney.Romney seems to be enjoying incumbent status even though the only elected office he has held is governor of Massachusetts. Utah State Auditor John Dougall, a Republican who flirted with a run himself, complained earlier that Romney's candidacy should drive a conversation, not a coronation.But it has started a conversat