The Democrat Media (but I repeat myself -- BIRM) have convinced them that they'll never get their message out. Mark Halperin of TIME and (I think) The Daily Beast was boasting to Charlie Rose on PBS about this at the Republican convention. There Halperin was, the son of the Pentagon Papers traitor Morton Halperin, sitting in the Republicans' house, bragging about shutting out the main Republican messages to the voters, and slicing and dicing everything they said and spinning it to the voters in a way that the public would find incoherent and incomprehensible.
And he predicted that Clint Eastwood's great "Empty Chair" speech supporting Romney and attacking The Impostor would never be seen by the People -- and he was right. The MSM filtered that completely, as they did the GOP-produced video intended to introduce the candidate (for once without 'Rat filters and spin) to the People. The Ratboys scheduled that one completely out of the convention coverage and blacked out the entire GOP on their key candidate presentation.
Bozell is understating his case, since describing it fully and clinically would sound hysterical.
I agree with both of you however - I honestly think the right person (Cruz, Paul, Lee, and maybe a few surprising guests) should attack the questioner with their obvious bias and do it on every show they are on, maybe even coordinate with the people attending on the same Sunday but different shows - if done properly I do think it would have an impact.