Santorum bows out; #sweatervest trends on Twitter

On Tuesday afternoon, the GOP presidential candidate told reporters that he is suspending his campaign for the Republican nomination.

“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,” he said at a press conference.

Santorum returned to the campaign trail this week after spending several days at the hospital with his daughter, who suffers from a rare chromosomal disorder.

The decision all but guarantees that Mitt Romney will be the Republican presidential candidate to square off against President Obama in the general election.