Media executives were much more conservative than journalists. They decide what stories get covered.
That's possible, but many stories emphasized by the media are not favorable to conservatives. Just look at the media's justified criticism of Romney's 47% remarks.
It wasn't necessarily justified. He said it was his job not to "care" about 47% of the population, referring to trying to get their votes in the election, and everyone made it out that he was talking about how he would govern them.