My first response is so what? Trump is even worse.
But really the only people responsible for a Clinton presidency are the people that were nutty enough to support and vote for Trump in the primaries The GOP base nominated the worst candidate in my lifetime so the blame lays squarely on them. They had Paul and Kasich, who both would have mopped the floor with Clinton, and yet they supported the crazy Oompa Loompa.
The only thing worse than Clinton winning though is the knowledge that Trumps supporters tend to be a bunch of conspiracy believing nutters and racist nationalists and they will most likely claim fraud after he gets obliterated in the election. If they would disappear back to where they came from then that would be at least a consolation prize of a Clinton victory but instead we get a double dose of crap heaped on us with their continued presense.