Here's a telling fact about modern American politics: Republicans only trust Fox News. Democrats trust every network but Fox News.
The numbers come from a new study from political scientists Matt Grossmann and Dave Hopkins collating five years of Public Policy Polling data on which major news networks people do and do not trust. PPP's data shows that Republicans are just as distrustful of mainstream outlets as of MSNBC, and Democrats are about as trusting.
Personally I would suggest that the reason why Democrats trust other news networks more than Fox, is because they are all infinitely more factually based than Fox News.
Which I would contend is exactly why the Republicans trust Fox News more.
Fox News tells its viewers what they want to hear, rather than the facts that they simply do not want to hear.
After all as everybody knows, facts have a liberal bias.