Given the situation with Romney and Newt, I wouldn’t be surprised if one of the other guys get a second look and deemed ‘acceptable’. It might be Perry since Newt’s position on immigration sort of neutralizes his problem. Huckabee seemed to like him.
Plus you gotta understand, Republicans still do demand a certain level of personal accountability. 3 wives, multiple affairs and shaky ethics are going to turn off the voters to Newt in the long run.