Rick Santorum may be in the lead, but Mitt Romney and his supporters aren't ready to give up on winning Michigan just yet. The pro-Romney super PAC Restore Our Future has committed to spending more than $470,000 on advertisements in Romney's home state, where it has already spent more than $700,000 on ads. One of the ads refers to Newt Gingrich's "tons of baggage" and insists that "beating Obama is important, too important to risk on Newt Gingrich."