CNN conveniently neglects to mention that little organ of the far-Left: HOLLYWOOD.
Even in covering Liberal bias, they're biased!
It is so pervasive and so necessary for them to be surrounded by it that they are literally swimming in it but to admit its presence would be to admit that somebody may have crapped in their fish bowl.
They won't ever have a "liberal Rush Limbaugh" because in order to do what Limbaugh does they would have somebody who is a) honest b) accurate and c) funny. And you can't be a card-carrying liberal while being all three.