Sen. Marco Rubio (R-Fla.) endorsed Mitt Romney on Wednesday in the race for the GOP presidential nomination.
"I am going to endorse Mitt Romney," the freshman senator said on Fox News. "Not only is he going to be the Republican nominee, but he offers a stark contrast to this president's record."
"There is no way that anyone can convince me that having a floor fight at the convention in Tampa in August is a recipe for victory in November," Rubio told Sean Hannity. "On the contrary. I think it's a recipe for disaster."
Rubio also dismissed calls for him to join the Republican ticket in the general election.
"I don't believe I'm going to be asked to be the vice presidential nominee," he said.
Many Republicans have said they want the Tea Party favorite to be on the ticket.
Former Florida Gov. Jeb Bush (R), who endorsed Romney on Wednesday, said he wants Romney to pick Rubio.
Bush, speaking to the Pittsburgh Tribune-Review, said that the junior Florida senator is "dynamic, joyful, disciplined and principled."
Recent decisions to move the release of an autobiography to summer and expenditures by his political action committee to vet his past have GOP insiders predicting that Rubio is reading himself for a run.