Looks like half the country is pretty much split between FOX and CNN/MSNBC. CNN/MSNBC look the same in their coverage so they are at 25% with FOX at 25%.
All 3 are biased to their narrative so it is sad that half the country, asssuming you can believe polls, trusts the narrative fed to them by their chosen media outlet.
Also cable news is all day while the networks basically have one half hour of national news and the 6PM 11PM is mostly local news. Why shouldnt people refer to cable news over local news if we are talking about national issues. Who is going to tune into NBC or CBS at 7PM and think in 22 minutes they are getting all the news they need.