You know, I used to think that.
But I now think that it really doesn't matter to the true believer/Leftist Hillary or Bernie supporter or Obama supporter. The only thing that matters to them is the ideology; a mishmash of beliefs about pro-abortionism, pro-homo sex, transgenderism, anti-Christianity, socialism, diversity, hatred of white American men and whites in general, and fanatic environmentalism. I'm sure others could add more.
The point is, it's the leftist ideology that must be supported. It doesn't matter who or how many get killed in the quest to impose it on America and the world. They will support anyone who agrees with it and right now it's Hillary. ISIS could nuke liberal San Francisco and it wouldn't matter to them. Hillary, Obama, Bernie would never be blamed. Those that support the ideology are never to blamed so the MSM would try to shift the blame to their usual suspects: Christians, white males, Donald Trump, the Tea Party etc. That's why I think Hillary will not lose support over the Orlando incident or any other atrocity committed against Americans.
the question is not about the true believers but about the squishy middle 20%
a hard core 40% or so will vote for Shrillary no matter what
the challenge is to limit her to the low 40s or at least well below 50 (with specific geographical issues most important, of course, due to the Electoral College0