There were over 500 other politicians who endorsed this; but I think she built her brand among those who feel particularly betrayed. And there is also a dose of misogamy, here and there.
But why do people feel so betrayed after older votes and actions should have triggered this much earlier? And will most of this go away soon?
Sounds like a long term issue that will not resolve itself. The only relevant advice anyone can give here is tips about job searching or sympathy.
You have my sympathy