Stacy Bengs / AP

Vice President Joe Biden reaches out to hold four-month-old Simon Hamill after Biden's campaign event Sept. 13, at the Zorn Arena on the University of Wisconsin-Eau Claire campus.

Jim Young / Reuters

Republican presidential candidate Mitt Romney reacts as he is presented with cake from a member of the media who celebrated her birthday on the campaign plane on the way to Long Island, N.Y., on Sept. 13.

Kevin Lamarque / Reuters

President Obama is obscured by the podium as he speaks at a rally in Golden, Colo., Sept. 13.

Jim Young / Reuters

Republican presidential candidate Mitt Romney holds a crying baby as he greets supporters at a campaign rally in Fairfax, Va., on Sept. 13.

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Jeff Swensen / Getty Images

Slideshow: Rick Santorum's political life

A look at the Pennsylvania politician — his career on Capitol Hill and his White House aspirations.

Launch slideshow

MSNBC.com: Surrounded by members of his family during a press conference in Gettysburg, Pa.,  former Pennsylvania Sen. Rick Santorum suspended his campaign on Tuesday, clearing Mitt Romney’s path to the Republican presidential nomination.

"Ladies and gentleman, we made the decision to get into this race at our kitchen table against all the odds," Santorum said in remarks to reporters in Gettysburg, Pa. "We made a decision over the weekend that while this presidential race for us is over for me and we will suspend our campaign effective today. We are not done fighting."

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