They never watched that much before either though. If there were stats showing a dramatic up-tick in the viewership prior to the election with the corresponding drop now, it would support your theory, but I don’t think that is the case.
No doubt you are correct though for years I don’t think CNN and MSNBC ratings have been very good. I imagine during the election they tuned in to see their messiah but my point was, once he was elected, their interest is back wherever young folks interest is.