Santorum to Return to Campaigning on Monday, in the Midwest JACKSONVILLE, Fla., - Rick Santorum will return to the campaign trail on Monday afternoon, but instead of coming back to Florida before Tuesday's primary, he will head to the Midwest. Mr. Santorum broke away from the campaign trail over the weekend to retrieve his tax returns from his home computer. While he was home, his special-needs daughter, Bella, who is 3, became critically ill with pneumonia. But Sunday morning, Bella had what Mr. Santorum described as a "miraculous turnaround." "She has without a doubt turned a corner, and we are very, very grateful," Mr. Santorum said on a conference call Sunday night with supporters. He said that "sometimes you have to thank the press" because reporters had asked him to make his tax returns public. He completes his own returns and keeps the information on his computer at home in Virginia. He left Florida on Friday night to retrieve that information and arrived home about the time that he and his wife, Karen, saw that Bella was struggling. They planned on Saturday to take her to a hospital in Philadelphia for treatment but she was "too fragile," he said, and she was admitted to a local hospital. She was treated and is now on the mend, he said, though she is wearing an oxygen mask and is expected to remain hospitalized for a few more days. Mr. Santorum, who is trailing in the polls in Florida, has not had much success in the race for the Republican presidential nomination since he won the Jan. 3 Iowa caucuses. He won the endorsement of several religious leaders who met in Texas this month, but that has not translated into more support from voters, as he trailed in New Hampshire and South Carolina. Newt Gingrich, who is competing with Mr. Santorum for the same conservative voters, indicated Sunday that he may ask Mr. Santorum after the Florida primary to join his campaign. Mr. Gingrich is running a distant second in the polls here to Mitt Romney, but says he could beat Mr. Romney if conservatives united around his candidacy. Mr. Santorum said Sunday that assuming his daughter is well enough, he was "heading out to the Midwest" on Monday and would "start campaigning in the next set of states as we move this campaign forward."