Nate Silver‘s latest forecast shows Romney still has the advantage in the Michigan GOP primary tomorrow “but it is more tenuous than the one we released overnight. The model gives him a 64 percent chance of winning the state, down from 77 percent in the previous forecast.”
The reason? Five new polls are out today with three showing Romney in the lead and two putting Santorum ahead.
Steve Kornacki: “The familiar Romney campaign formula — wait for conservative rival to emerge, beat back conservative rival with attack ads and strong debate performance, prevail in do-or-die primary test, wait for next conservative rival to emerge — may be in the process of repeating itself in Michigan. But the final polling in advance of tomorrow’s primary contains some serious hints of trouble for Romney.”

