Washington (CNSNews.com) – Declaring the 2010 congressional campaigns “a referendum on the very identity of the nation,” Florida Senate candidate Marco Rubio brought the crowd at the Conservative Political Action Conference to its feet several times during his speech. “People understand that if we get this wrong, there is no turning back,” Rubio said. “They want someone to stand up to the big government agenda and not be co-opted by it.” The conservative Rubio, a former speaker of the Florida House of Representatives, turned a 30-point deficit last year into an eight-point lead in polls against his Republican primary opponent...