It is practically impossible to trust any of the cable TV news outlets because they are all owned by corporations who we know to be driven by profit motive. Even if one likes to watch Fox News or CNN and what you see is everything that you like to see, you should be smart enough to realize the only reason why you see it is for Fox or CNN to make money. It doesn’t matter whether it is true and it certain is not fair and balanced or simply “calling balls and strikes.”
So yes, you can blame the networks for what they are doing, but really, the problem is with the voters who appear to rather be entertained more than participate in democracy.