Actually, the answer to why leftist Jews vote Dem despite growing anti-Jewish sentiment in the Rat party and among progressives in general is much more simple its because the issues they feel most strongly about are "LGBTQ", abortion-on-demand, multiculturalism, and so-called climate change. Israel is way down the list, and theyre in denial about Islamic anti-Semitism because of guilt over criticizing brown people.
So given those facts, who are they going to vote for, Republicans?
Thankfully a quarter of American Jews (on average) vote sanely.