New Marco Rubio Ad: Charlie Crist Won't Say if He Will Caucus with Democrats or Republicans

Former House Speaker Marco Rubio is following up on Chris Matthews comments on the Tuesday edition of the Morning Joe television show when the pundit speculated that independent candidate Gov. Charlie Crist would caucus with the Democrats if elected in November. Rubio, running for the Senate seat as a Republican, launched a Web video on Wednesday bringing Florida voters' attention to Crist not revealing which party he would caucus with if elected.