I know. You want to say that Fox presents misinformation ... and you are certainly right. But here's a summary (from alternet.org) of research findings that indicate that people with certain psychological characteristics selectively expose themselves to Fox-type media.
And thus we find, at the root of our political dysfunction, a classic nurture-nature mélange. The penchant for selective exposure is rooted in our psychology and our brains. Closed-mindedness and authoritarianism—running stronger in some of us than in others—likely are as well.
But nevertheless, it took the emergence of a station like Fox News before these tendencies could be fully activated—polarizing America not only over politics, but over reality itself.
That's the tickler. How that conclusion was reached is an interesting amalgamation of psychological research and political survey work. It's worth the read.