From the December 16 edition of Premiere Radio Networks' The Sean Hannity Show:
SEAN HANNITY (HOST): I knew he wasn't going to do well. I mean, it got so bad that he actually lost to the guy that follows him for the week at Thanksgiving. But apparently CBS is all freaked out. There's a Drudge headline, “CBS panicked, Colbert sinking in ratings.” You want to know why he is sinking in the ratings? Cause he's not that funny, he's never been that funny, Jimmy Fallon is just light years ahead of him, as is Jimmy Kimmel.
[...]
HANNITY: And the other thing is, you've got Colbert pushing his left wing, radical agenda. Nobody wants to hear that from him at, you know, 11:30 at night.