Rush Limbaugh sent a clear signal to his radio audience Monday on the eve of Super Tuesday.If you want to send a message to the Washington and GOP establishment, Ted Cruz is your candidate."Ted Cruz is only guy that was taking on the Republican establishment of all the Republicans in the race," Limbaugh told his 10 million listeners."And he was the only guy who had been fighting the establishment and he had done it to their face."He goes to the floor of the Senate, he calls Mitch McConnell a liar on any number of issues, from the budget, to amnesty, to Senate rules, and Cruz had made it plain he was the guy that was gonna take it to the establishment."He was such an outsider that even as a member of the Senate he was hated, despised, and that was always gonna be a resume-enhancement point."Rush noted that Trump's rise is due to the "force of his personality," but he warned conservatives about the billionaire."It's Trump that's out there talking about how he likes Pelosi and Reid, he could do deals with them if he had to," Rush said.Trump has openly bragged that his close relationships with House Minority Leader Nancy Pelosi and Sens. Harry Reid and Chuck Schumer, and said they will enable him to do "deals" with Democrats.Trump has been a longtime donor to Democratic candidates and committees, and backed Jimmy Carter, Walter Mondale, Hillary Clinton, and other leading Democrats.Limbaugh has not officially endorsed any candidate, but has made it clear that conservatives have only one choice in the GOP primary.Last month, Limbaugh told his radio audience, "If conservatism is your bag, if conservatism is the dominating factor in how you vote, there is no other choice for you in this campaign than Ted Cruz."Limbaugh gave his powerful imprimatur to Cruz by adding, "this [Cruz] is the closest in our lifetimes we have ever been to Ronald Reagan."Limbaugh has described Trump as a non-ideological candidate."Trump's not a Republican," he said."This is not a criticism of Trump. But for those of you that conservatism's the answer and conservatism is the way, you have no choice here. Ted Cruz has got to be your guy. There's nobody even close. Nobody."