Rick Santorum in Cape Girardeau

Republican presidential candidate Rick Santorum speaks at the annual Lincoln Day event Saturday, March 10, 2012 in Cape Girardeau, Mo. (Fred Lynch)

U.S. Rep. Jo Ann Emerson introduces Republican presidential candidate Rick Santorum at the annual Lincoln Day event Saturday, March 10, 2012 in Cape Girardeau. With Santorum are his wife, Karen, and his son, John. (Fred Lynch)

Republican presidential candidate Rick Santorum speaks at the annual Lincoln Day event Saturday, March 10, 2012 in Cape Girardeau, Mo. Listening are his wife, Karen, left, his son, John, and U.S. Rep. Jo Ann Emerson. (Fred Lynch)

Republican presidential candidate Rick Santorum speaks at the annual Lincoln Day event Saturday, March 10, 2012 in Cape Girardeau. (Fred Lynch)

About 700 people attended the Lincoln Day event to hear Republican presidential candidate Rick Santorum Saturday, March 10, 2012 at Ray's Plaza Conference Center in Cape Girardeau. (Fred Lynch)

The 2012 Lincoln Day dinner was presented by the Cape Girardeau County Republican Women's Club.

U.S. Rep. Jo Ann Emerson applauds as Republican presidential candidate Rick Santorum introduces his wife Karen to the crowd in the hanger at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. Santorum was heading to Tupelo, Miss. following his stop in Cape Girardeau,Mo. (Laura Simon)

Republican presidential candidate Rick Santorum poses for a photo with one of his supporters during a campaign stop at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. Santorum was heading to Tupelo, Miss. following his stop in Cape Girardeau,Mo. (Laura Simon)

Republican presidential candidate Rick Santorum autographs a campaign button for Dianne Maclin of Hayti, Mo. during his campaign stop at the Cape Girardeau Regional Airport Saturday night, March 10, 2012. Santorum was heading to Tupelo, Miss. following his stop in Cape Girardeau,Mo. (Laura Simon)

Dennis Fowler, left, and Ralph Mouser wait for the arrival of Republican presidential candidate Rick Santorum at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. (Laura Simon)

Republican presidential candidate Rick Santorum and his wife Karen make their way to a group of supporters during a campaign stop at the Cape Girardeau Regional Airport Saturday night, March 10, 2012. (Laura Simon)

Jerry Lively of DuQuoin, Ill. waits for the arrival of Republican presidential candidate Rick Santorum at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. (Laura Simon)

Young supporter of Republican presidential candidate Rick Santorum wait for him to arrive at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. (Laura Simon)

Supporters of Republican presidential candidate Rick Santorum wait for his arrival Saturday night, March 10, 2012 during his campaign stop at the Cape Girardeau Regional Airport. (Laura Simon)

Republican presidential candidate Rick Santorum and his wife Karen pose for a photo Saturday night, March 10, 2012 during his campaign stop at the Cape Girardeau Regional Airport. (Laura Simon)

Rep. Jo Ann Emerson listens as Republican presidential candidate Rick Santorum gives a brief statement before heading into the crowd in the hanger at the Cape Girardeau Regional Airport for photos and autographs Saturday night, March 10, 2012 during his campaign stop. Santorum was heading to Tupelo, Miss. following his stop in Cape Girardeau,Mo. (Laura Simon)

Republican presidential candidate Rick Santorum and his wife Karen pose for a photo at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. (Laura Simon)

Supporters of Republican presidential candidate Rick Santorum wait for his arrival Saturday night, March 10, 2012 during his campaign stop at the Cape Girardeau Regional Airport. (Laura Simon)

Republican presidential candidate Rick Santorum autographs a campaign sign during his campaign stop at the Cape Girardeau Regional Airport Saturday night, March 10, 2012. (Laura Simon)

Supporters of Republican presidential candidate Rick Santorum wait for an autograph Saturday night, March 10, 2012 during his campaign stop at the Cape Girardeau Regional Airport. (Laura Simon)

Republican presidential candidate Rick Santorum visits with the crowd in the hanger at the Cape Girardeau Regional Airport Saturday night, March 10, 2012 during his campaign stop. Santorum was heading to Tupelo, Miss. following his stop in Cape Girardeau,Mo. (Laura Simon)