Nooooo, there's no media bias:

Opening Monday's Nightline, ABC's Terry Moran derided Karl Rove's brand of politics as a mixture of "divisiveness, anger" as well as "ruthlessness"

Okay, okay, just because ABC doesn't like Karl Rove doesn't make them a Democratic shill, does it? No, but this does:

At the close of the segment, he wondered if the country has "had enough of [Rove's] bitterly polarizing politics? Or will the era of Karl Rove continue?" During the "had enough" portion of the sentence, video of Barack Obama and Hillary Clinton accompanied the audio; when Moran asked if the Karl Rove era will continue, President Bush could be seen.