Rick Santorum latest target after "surging" into 3rd in Iowa

Rick Perry's campaign wasted no time going after Rick Santorum following the release of a new CNN/Time/ORC International poll that showed the former Pennsylvania senator surging into third place in Iowa.

In a new radio ad released by Perry's team Thursday, Santorum is portrayed as a free-spending Washington insider who voted for earmarks and wasteful spending during his time in Congress.

The spot features a clip of Santorum saying he was "very proud of the earmarks" he wrote into spending legislation.