Not sure that this is the MSM's conclusion....

...........................but it makes sense to me:

I am exhausted with folks talking about some fundamental political shift to a white male resurgence, or whatever.  There was no shift.  Trump got about the same number of votes as Romney and McCain.  He won no more white male votes than those guys and if anything performed better than them in traditional Democratic categories like single women and blacks.  The reason Trump won is because Clinton had 10 million fewer votes than Obama had in his first win.  Traditional Democratic supporters were unenthusiastic about Clinton and stayed home.

-Warren Meyer, as extracted from here