Marco Rubio endorses Romney

Florida Senator Marco Rubio threw his support behind Mitt Romney for the Republican Party nomination.

On Fox News' Hannity, the freshman senator noted Romney's 25-year career in the private sector, as well as his perceived ability to beat President Obama in November, as the reasons for his support. "We have got to come together behind who I think has earned this nomination, and I think that's Mitt Romney," Rubio said.

Rubio, a popular Cuban-American, has been a highly sought after endorsement by the Republican candidates, which he acknowledged tonight.

"I think all the candidates in this race have a lot to be proud of. They have offered a lot to the debate. But I can't buy into this idea... the only way they can win this race is having a floor fight in Tampa in August," Rubio said referring to the Republican National Convention to be held in Tampa. "And I think that is a recipe to deliver four more years to Barack Obama."

Romney handily won Florida's primary, and also has the endorsement of the Sunshine State's former governor, Jeb Bush. In a recent interview, Bush said that he would like to see Rubio as Romney's vice presidential pick, calling him "dynamic, joyful, disciplines and principled."

Rubio is a conservative favorite, who has said he's "flattered" but not interested in the job. His endorsement comes on the heels of multiple other establishment figures throwing their hat in the ring for Romney in an effort to coalesce behind one candidate.

Walt Cronkite contributed to this article.