Rep. Paul Ryan, R-Wisc., said it would be unwise for anyone new to enter the Republican primary, even if Mitt Romney were to lose the primary in Michigan at the end of the month.
Ryan himself was once discussed as a potential contender.
“I don’t see how that can happen,” Ryan said on NBC’s Meet the Press on Sunday. “It’s just too late, I think.”
Ryan said he expects the contest to continue for several more months before a Republican nominee emerges.