(WSBT) — If Mitt Romney loses the Michigan primary on Tuesday, it could stretch the Republican presidential campaign all the way to the nominating convention, New Jersey Gov. Chris Christie, a Romney backer, told CBS’ Bob Schieffer on Sunday.

“Sure, that’s a possibility,” Christie said. “I still don’t think it’s a likelihood, though.”

“This is going to go up and down,” he said, noting that there have been a host of different front-runners, including Herman Cain, Michelle Bachmann and Rick Perry, all of whom have since dropped out of the race. (Watch the full interview below.)

“We have to be patient as Republicans,” he said. “Take a deep breath and let this process work its way out.”

The electorate is “very volatile” this year, he said.

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