Rick Santorum campaigns
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Credit: Getty Images
APPLETON, WI - APRIL 02: Republican presidential candidate, former U.S. Sen. Rick Santorum makes a grilled cheese sandwich during a campaign stop at Simons Specialty Cheese on April 2, 2012 in Appleton, Wisconsin. Wisconsin residents will go to the polls on April 3 to vote for their choice for the Republican presidential nominee. (Photo by Scott Olson/Getty Images)
