Looks like Santorum may have gotten the last bit of momentum in Michigan.

Public Policy Polling has more…

PPP’s final poll in Michigan finds Rick Santorum holding on to the smallest of leads with 38% to 37% for Mitt Romney, 14% for Ron Paul, and 9% for Newt Gingrich.

It’s always good to be cautious with one night poll numbers, but momentum seems to be swinging in Santorum’s direction. Romney led with those interviewed on Sunday, but Santorum has a 39-34 advantage with folks polled on Monday. The best sign that things have gone back toward Santorum might be that with those polled today who hadn’t already voted, Santorum’s advantage was 41-31.

But there’s still good news for Romney in these numbers…

Even though things seem to be moving back in Santorum’s direction, there’s one big reason to think that Romney will still come out as the winner tomorrow night. 18% of the electorate has already cast its ballots and with those voters in the bank Romney has a 56-29 advantage. Santorum’s likely to win election day voters, but he”s going to have to do it by a wide margin to erase the lead Romney has stored. We see Santorum with a 40-33 advantage among those who have yet to vote.

This one is guaranteed to be a nailbiter, but I still think Santorum can claim victory in this state since Romney should have destroyed everybody here.

More as it develops…