Support WBURFlorida GOP Infighting Means Trouble For Gov. CristPlay03:51Download AudioGreg AllenJanuary 08, 2010 ShareRepublican U.S. Senate candidate Marco Rubio is interviewed after a speech in Coral Gables, Fla., in December 2009. A new poll shows Rubio in a virtual dead heat in the race against Florida Gov. Charlie Crist. (AP)