HUNTSVILLE, Alabama (CNN) — White House hopeful Mike Huckabee denied the Republican presidential race had narrowed to two candidates, Mitt Romney and John McCain, telling journalists at an Alabama campaign stop Saturday that “if anybody ought to be quitting, it's Mitt Romney.” “John McCain hasn't suggested I step aside. So if Mitt Romney's going to engage me, which he has, then I feel like the engagement is on,” said the former Arkansas governor. “…If I'm ahead of him in places like Alabama, Georgia and Tennessee, then he needs to step aside and let me in fact be that conservative alternative...