According to a Pew study, CNN and Fox News are pretty close in their commentary-to-straight-news ratio. MSNBC, on the other hand, is almost entirely commentary and opinion.
This runs a bit contrary to common perception (including my own). I’ve always seen Fox News and MSNBC as mirror images of one another at opposite sides of the ideological divide with CNN just to the left of center. But that’s not true.
I have to admit, though, that I’ve all but given up watching cable news. I just don’t find the format all that appealing or any more.