Rick Santorum dropped out of his presidential campaign Tuesday after falling far behind front-runner Mitt Romney in the race for the Republican nomination.
42123
Rick Santorum drops out of presidential campaign
115922
Rick Santorum Suspends presidential campaign
87522
Huckabee announces he will not seek Republican nomination for president in 2012
86291
Palin steps down as Alaska governor
84888
Santorum forms presidential exploratory committee
41350
Herman Cain suspends presidential campaign
45109
Sen. Johnson loses bid for GOP leadership post
156801
Babeu ends congressional campaign.
165635
Steele loses support among Republican governors
5357
2012 presidential election comes to an end
95598
Dino Rossi concedes governor's race
31602
Mitt Romney wins the Florida Republican primary
68320
Rick Perry to drop out of presidential race Thursday
59042
Jon Huntsman dropping out of the race
128404
Rick Santorum to suspend his campaign
66577
Cohen drops out of lieutenant governor's race
3069
Romney takes a narrow lead over Obama: