Marco Rubio, the charismatic, Hispanic, young (and even younger-looking) freshman senator from Florida is launching his campaign for the White House Monday in Miami.
Rubio, 43, will be entering a growing field of candidates. Right now, he's considered a second-tier candidate, polling behind Wisconsin Gov. Scott Walker and former Florida Gov. Jeb Bush, the man Rubio has called a mentor.
That could change once he gets in. Rubio's advisers believe he has a path to the nomination, with assets few other candidates can match.