Many Jews believe that Christians are anti-Semitic from the days when Europeans would kill them, especially after Easter, and they still see American conservatives as such.
There is an extreme cognitive lag. My husband is Jewish and we have a Jewish acquaintance, a very successful financial adviser, who sends out emails prolifically with extreme left leanings, despite being very vocal about being Jewish and pro-Israel. The latest missive was compassionate towards Palestinians. It’s his knee jerk reaction not to defend self-defense and liberty.
Like all the strange excuses for Jews voting left, that one doesn't hold up when one looks at 150 years of history.
The democrat party did not become a party of the non-religious or anti-Christian, until very modern times.