Rick Santorum Suspends Presidential Campaign

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Ricky
Former Pennsylvania Sen. Rick Santorum suspended his presidential campaign Tuesday, a source close to the campaign confirmed to ABC news.

Rick Santorum Suspends Presidential Campaign

Former Pennsylvania Sen. Rick Santorum suspended his presidential campaign Tuesday, a source close to the campaign confirmed to ABC news.

The news comes the day after Santorum's 3-year-old daughter Bella was released from the hospital -- her second trip this year. She suffers from a rare and often fatal disorder called Trisomy 18.

Santorum waged a scrappy and unexpectedly strong campaign for the Republican nomination, essentially moving to Iowa before narrowly winning the caucus there. But like many of hiss stronger showings in the primaries, Santorum' s Iowa victory was marred by some bad luck; party officials there initially called Mitt Romney the narrow victor on caucus night, only to later give the nod to Santorum.

FILE - In this June 6, 2011 file photo, Republican presidential candidate, former Pennsylvania Sen. Rick Santorum holds his daughter Isabella in Somerset. The ill daughter of Republican presidential candidate Rick Santorum has been hospitalized. Santorum's campaign said Friday that Bella had been taken to an undisclosed hospital. The 3-year-old has the rare genetic condition Trisomy 18 and was hospitalized earlier this year with pneumonia. Santorum's campaign did not say why she was hospitalized. (AP Photo/Gene J. Puskar, File)

Santorum went on to become the main conservative alternative to Romney. But Romney and his allies outgunned Santorum in television advertising and outmaneuvered him in the delegate race.

Santorum's move makes former Romney, the former Massachusetts governor who has a commanding delegate lead, the all but certain Republican nominee, although Newt Gingrich and Ron Paul both remain actively in the race.