ThinkProgress flags this line from an interview Real Clear Politics did with Republican Governor Mark Sanford of South Carolina in which he calls Rush Limbaugh an idiot, albeit indirectly. Asked for his reaction to the idea that some conservatives, most notably Limbaugh, are hoping that Obama's presidency fails, Sanford replies (bold font is mine):
I don't want him to fail. Anybody who wants him to fail is an idiot, because it means we're all in trouble. But I do think, in that same vein, if you've looked at the pages of history, if you've looked at the pages of economic data that I've looked at over a long period of time -- I've got a masters in business from the University of Virginia, I've worked up in New York in finance -- if you've looked at that kind of stuff and you legitimately think that something ain't going to work, you'd be cheating him and cheating yourself if you didn't lay it out and call an ace an ace in terms of where you're coming from.
Sanford makes the distinction between legitimately believing a plan is not going to work and explaining your reasons why, and just openly rooting for a presidency to fail, as Limbaugh has, no matter what the cost to the nation.