In recent years there have been a lot of wide nets cast to discern whether the media has a discernible bias towards Republicans or Democrats. These studies produce such a mishmosh of data that folks on both sides can claim their own contentions have been supported by the study.
But individual cases are often a much better indicator of the real picture. Take, for example, the case of Tony Blankley. Tony Blankley is on national TV every week.
Please try to imagine a Democratic partisan landing a regular TV gig who routinely wrote columns like this one. It's juvenile, it's vague, and it's downright sloppy writing. I can't even think of an equivalent Democratic writer - if Blankley were a liberal, he couldn't get work. Period.