The March 2012 Franklin and Marshall College Poll finds former US Senator Rick Santorum losing ground in his home state as he has nationally. Senator Santorum leads Mitt Romney now by a narrower margin among Pennsylvania Republicans, 30% to 28%, than he did in February when he led Romney, 45% to 16%. Ron Paul and Newt Gingrich trail with 9% and 6% respectively. The Republican race for US Senate in Pennsylvania remains wide open as an unprecedented four in five voters remain undecided in the race.