"If Santorum wins, then maybe there was some impact there. But it's unlikely that there's going to be a big crossover vote for Santorum," Kondik says.
The two other GOP contenders, former House Speaker Newt Gingrich and Texas Rep. Ron Paul, are still factors in the race, Kondik says, even though they are not expected to come close to winning in either state.
"They're relevant in the sense that they are taking a combined 20 or 30 percent of the vote," he says. "This thing could go on for quite awhile here, but the path to victory is a lot clearer for Romney than it is the others."
Paul, Romney and Santorum are all scheduled to campaign in Michigan Tuesday, while Gingrich will be in his home state of Georgia, meeting with voters there ahead of next week's Super Tuesday primary.
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