"Restore Our Future, a super-PAC supporting Mitt Romney’s presidential campaign, will run full-page ads attacking Newt Gingrich in the New Hampshire Union Leader and The State in Columbia, S.C., the most prominent newspapers in the next two primary states. The decision to attack Gingrich is a curious one, as Rick Santorum has emerged as Romney’s top rival for the GOP nomination after he virtually tied Romney on Tuesday in Iowa’s caucuses. Post-voting analysis shows much of Gingrich’s support in that state ended up going to Santorum."