Has to be something with self hatred
Nope. Speaking from experience...it's Tradition.
I married into a family that is Jewish. My wife and her father are staunch Conservatives. Her mother...well...she has certain mental defects that make it impossible for her to stand upright against the winds of change. But that's another story entirely.
Anyway, my wife's family on her mother's side are all Democrats. After 30 years, no matter how reasoned, logical or passionate I make my arguments, her uncle's, her grandparents, etc...all vote Democrat.
When I ask "Why?", they say, "That's the way my father (or mother) voted so it's good enough for me."
Sheep. Plain and simple. And these are not morons. Attorneys, doctors among them. It makes no sense.
Unless you remember the one word that holds a very high position in the Jewish family. Tradition.
I can offer no other explanation. Even when Obama was exposed as a Jew hating, Israel hating Muslim...they still voted Dem. All the way down the ballot.
I've stopped talking politics with them and in some cases stopped talking to them altogether.