David Frum, trying harder than usual to alienate himself from the derangement of his party, suggests a thought experiment to determine which conservative "entertainers" actually believe the lunacy they peddle:

Suppose an agent arrived in the offices of Limbaugh/Beck/Hannity/O’Reilly etc. with an offer. “I can guarantee you a deal that will pay you twice as much - bring you twice as much fame - and extend your career twice as long - if you’d say the exact opposite of what you are saying now.” Which of them would sign?

Frum's guesses:

My nominations: O’Reilly accepts for sure. Beck likewise almost certainly says yes. Limbaugh would want to think it over, but would ultimately say no.  Mark Levin: certainly not. Sean Hannity would need the offer explained a few times. Ann Coulter - that one puzzles me - but probably no. Roger Ailes? Do you even need to ask?

For my part, I'm not nearly so convinced of Beck, as his particular form of derangement suggests biological rather than commercial origins. And I'd put Coulter, whose every breath reeks of cynical opportunism, at the top of the "yes" list.