Article Photos: Santorum's early success pushed GOP to the right

Former Pennsylvania Sen. Rick Santorum turns to his wife Karen, left, after announcing he is suspending his candidacy for the presidency, Tuesday, April 10, 2012, in Gettysburg, Pa. (AP Photo/Gene J. Puskar)

Former Pennsylvania Sen. Rick Santorum turns to his wife Karen, left, after announcing he is suspending his candidacy for the presidency, Tuesday, April 10, 2012, in Gettysburg, Pa. (AP Photo/Gene J. Puskar)