No way. Hillary is in it to the finish and will be the prohibitive favorite to win it all. When you look at the electoral map, it is hard to pick states that Obama won in 2012 that Hillary/Dems will lose in 2016. The changing demographics of this country are making the Dems the permanent majority party, especially in Presidential elections.
I can see OH, FL, VA, CO, NV, NM, IA, NH being flipped-—all were carried by GWB at least once.
Depending on who the GOP nominee is, he could even pick off a solid blue state such as WI, PA, or MI.
One thing we know, things do change.
I do agree that changing demographics help Dems.