Santorum drops out in face of daughter's illness
VIDEO: Santorum exits race: 'Not done fighting'
Klein: Santorum advanced his profile, even in losing
More Klein: Romney is lucky his rival was Santorum, not Palin
Santorum asks for help paying down campaign debt
Romney: Santorum an 'able and worthy competitor'
Ryan on Romney: He's 'kind of a throwback to the '50s'
Tweet: Gingrich boasts he survived the Santorum surge
Gingrich pitches to Santorum delegates as rival exits race
“I’m thinking about getting it tattooed up here,” Gingrich said as he pointed to his forehead, “All the way to Tampa, OK?”
Gingrich Talks Makeup with High School Girls
Paul pledges to stay in, praises Santorum