(CNSNews.com) - Conservative talk show host Rush Limbaugh endorsed former Massachusetts Gov. Mitt Romney Tuesday, reversing his previous statement that he believed none of the GOP presidential contenders have all three legs of the conservative stool. In clarifying his statement, Limbaugh said he should have said "that at the outset of our campaign, there wasn't one who had all three legs." Former Tennessee Sen. Fred Thompson did, "but he was never really a factor," he said. "I think now, based on the way the campaign has shaken out, that there probably is a candidate on our side who does embody all three legs of the conservative stool, and that's Romney," Limbaugh said in a transcript on his Web site Tuesday. "The three stools or the three legs of the stool are national security/foreign policy, the social conservatives, and the fiscal conservatives. The social conservatives are the cultural people. The fiscal conservatives are the economic crowd: low taxes, smaller government, get out of the way," he added.