Rubio to Introduce Romney, Christie to Keynote RNC

Speaking slots for former VP short-listers announced

Mitt Romney chose Paul Ryan for his running mate, but he's making sure to find major convention roles for the other short-listers.

New Jersey Gov. Chris Christie and Florida Sen. Marco Rubio, two of Romney's rumored top choices for the job, will have prominent speaking roles at this year's Republican National Convention. Christie has been awarded the coveted keynote address, while Rubio will introduce Romney on the closing night, sources told Fox News.