Rick is calling it quits. At a press conference Tuesday afternoon, the Republican candidate who enjoyed a sudden surge and touted himself as the anti-Mitt Romney said he has decided to withdraw his name from the contest for the Republican nomination. Santorum made no mention of GOP frontrunner Romney in his speech. "Miracle after miracle, this race was as improbable as any race that you will ever see for president," Santorum said from Gettysburg, Penn. Romney congratulated Santorum on his campaign in a statement, saying, "He has proven himself to be an important voice in our party and in the nation."