I did google around. And they only hits I found were specifically Trump critical media. I'm hard pressed to call that bias.

A fair reporting of Trump comes across in a very bad light. I guess that's unfortunate for him, but it's of his own making.

The real question is whether anything reported on him (or the right at large) are erroneous, as he has claimed hundreds of times ("lies" and "fake" specifically), because the very few times it has happened, it was publicly retracted, and most often people got fired for it. I think that's a marker for healthy news.

Look for numbers on earlier elections, then:

https://www.opensecrets.org/news/2010/09/media-professionals...

http://dailycaller.com/2010/08/28/obama-democrats-got-88-per...