Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, accompanied by his daughter, Elizabeth, speaks at Temple Baptist Church in Powell, Tenn., Wednesday, Feb. 29, 2012. (AP Photo/Mark Humphrey)

Associated Press
Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, accompanied by his daughter, Elizabeth, speaks at Temple Baptist Church in Powell, Tenn., Wednesday, Feb. 29, 2012.  (AP Photo/Mark Humphrey)
Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, accompanied by his daughter, Elizabeth, speaks at Temple Baptist Church in Powell, Tenn., Wednesday, Feb. 29, 2012. (AP Photo/Mark Humphrey)
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