I think she was in the wrong place at the wrong time. I dont know how far back and how deep this hate for her goes exactly, but I suspect the Democrats - a bit like the Labour party - didnt realise that the financial crisis and the depression that followed changed everything. The New Deal / New Labour was for another time when all people could see was growth and stability extending into the distance. A tech bubble here or a mini crisis there didnt change anything, you lower rates, people borrow more money, keep spending and growth continues. The rising tide lifts all boats. OK so inequality is growing but things are still basically getting better for the poor, if the rich are getting richer, faster, its not ideal but its better than everyone getting poorer.
It was seductive while it lasted - and even after it came off the rails we were left with the impression that this was how people thought and this was how people voted. You cant be socialist anymore, you'll get wiped out! You cant tax corporations, theyll just relocate to a lower tax jurisdiction. People dont want to pay more tax, they wont vote for that - even if they are poor, they ASPIRE to being rich, and they wont want to pay more tax when they are. So even though this model of unfettered capitalism has now failed, we need to clear up the damage, put it back on the rails and start it up again, because it worked well for years and anyway, what are we going to replace it with? 80s style socialism? That doesnt work either.
I think that was Clinton's logic and that was/is the Labour - PLP - logic. You cant go to the left because it doesnt win elections (it didnt for a long time). So you need to be centre / centre right.
But the problem is, things have changed. People are still fuming about 2008 (bailing out the banks), theyre still fuming about how unevenly the hardship has been felt since then, with food banks and unemployment and the cost of living and the rest of it. And so they are not going to vote the same way they would have in 92 or 97. Obama managed to convince people he was a genuine "change" candidate in 08, I dont know exactly how to explain his victory in 2012 in the context of everything above except to say people just like the guy and presumably didnt blame him for the fact that change wasnt really coming - they (rightly) blamed Congress for that. He managed to mobilise minorities in a way that Clinton just couldnt, she couldnt arouse that level of enthusiasm and hope.
By 2016 they'd had enough. They needed something that was more than just a rhetorical expression of hope and change, they wanted something that was a more angry, anti establishment, anti corporate expression of hope and change. Clearly they have completely misdirected those hopes, but Clinton did not offer what they wanted, so they either decided to try and tear down the system with Trump, or didnt vote at all. I do think Sanders would have beaten Trump because he spoke to these sentiments in a much more constructive way.
This has caused some change in me personally as well. Because I have to admit, here in the UK, I accepted this idea that people are basically not left wing and a real left winger could not win. I had serious reservations about Corbyn. I still think he lacks the charisma and inspiration of someone like Sanders, but in light of what happened with Trump I am in the process of reevaluating. Maybe he does have a better chance of beating the Tories than a soft left candidate. Just like I think someone like Elizabeth Warren, from the little I know of her, maybe has a better chance of beating the Republicans than Tim Kaine. Because people are pissed off and something has to change.
I think the left has some serious work to do now, taking the best out of old fashioned socialism but modernising it to make it relevant in the 21st century context, in terms of social media and technology and globalisation which really isnt reversible at this stage. I dont think Corbyn has really done that yet, but maybe he can do it. And maybe people in the Democrat Party in the US can lead the way in this too.