The news comes as three new polls show a tight race in Michigan. Although PPP's latest survey shows a small Santorum lead, We Ask America has the race tied and a poll released this morning by Mitchell Research has Romney ahead. FiveThirtyEight's latest forecast gives Romney a 51 percent chance of victory.
In recent days, Romney's super PAC has focused its ad campaign on attacks on Santorum. Ron Paul—who has emerged as an unlikely ally of Mitt Romney in state after state—is launching a new statewide ad campaign in Michigan attacking Rick Santorum as well. Although their ads are different, the message is the same: attacking Rick Santorum's fiscal record from the right.