Note the important distinction between so-called "hard news" and the opinion section. Many opinion writers are doing a great job. But "hard news" articles can be extremely biased, through the headlines editors write, the facts reporters chose to include or exclude, etc.

And at least in the interviews with Undecideds I've seen, they at least claim to favor "facts" over opinions. In other words, the "sanewashing" of newsrooms is likely over-riding the well-written words of opinion columnists.