I have a few guesses....
1. She (or Bill) has dirt on too many high level socialists and would out them if she doesn’t get what she wants.
2. Much like the GOPe runs old geezers because “It’s their turn”, the Dems have decided it’s Hitlery’s turn.
3. Once people become fixated on an idea (Hitlery should be President), it’s difficult to get them to change. Think about how hard it is to get them to actually think about or find actual data to support “facts” they’ve been told all their lives like “Republicans are evil”, “Republicans only care about rich people”, Republicans are mean and hate children and puppies.” “If you don’t vote democrat, the republicans will put you back on the plantation.”, “republicans are racist, sexist homophobic bigots.”
4. Name recognition. (Democrats would have to learn a whole new name if it’s not Hitlery!! You think I’m kidding or snarky? A large percentage of them cannot even name the VP.)
Wouldn’t surprise me if there were a complex web of additional reasons, but I’m betting these are in the mix.
I believe that her health will break down. She has a history of blood clots. Her father died from a series of strokes. I believe she has had several already and probably is on blood thinners. I don’t know about alcoholism, but by evidence she does drink. At her age she should not be dealing with this stress.