Why are Jewish Americans so liberal?

[King of Kensington]

The religious right and hyper-Christian nationalism and anti-intellectualism of the GOP plays a big role. That's more relevant than the New Deal at this point I think.

As for Israel, while the hard right supporters of Israel vote GOP, the Democrats are pro-Israel enough for more centrist and center-left Jews that are pro-Israel. 

[King of Kensington]

Many Jews in Canada have swung to the Conservatives after the Conservatives essentially offered blind support to Benjamin Netanyahu.

The Conservatives did well among Asian voters also.  Partisan loyalties are much less "fixed" in Canada and the perception that religious right and anti-immigrant types "dominate" the Conservative Party is less pronounced (when Harper had a majority he didn't really do much social conservative stuff or drastically cut immigration etc.).

Plus, Toronto and Montreal make up about 80% of Canadian Jewry so the immigrant/Orthodox element is a larger share of the Jewish population (if NY/NJ made up 80% of US Jewry it would be less "liberal.") But you'll find your stereotypical liberal Jews living in St. Paul's, University-Rosedale, Westmount etc. as well. 

[King of Kensington]

As king of Kensington mentioned Canada is more mixed but I've found your more liberal Jews in places like Toronto-St. Paul's or Westmount tend to go Liberal, but when you get out into the suburban areas like York Centre, Eglinton-Lawrence, Mount Royal, and especially Thornhill, the Tories do tend to do a lot better.

Not only are these ridings "suburban" but they also have a lot of Orthodox, traditional and immigrant Jews and not that many Reform Jews and secular left-liberal types.

[King of Kensington]

I found this interesting.  I think 4 of the 5 types of Jewish voter can be found in Canada and Britain as well.

https://uselectionatlas.org/FORUM/index.php?topic=207425.msg4488101#msg4488101

[King of Kensington]

"Never again" and remembering the Holocaust can be given a "progressive" cast, but not necessarily so.

[King of Kensington]

If you adjust for class,  degree of secularization, and the population density of where people live, I suspect the political gap between Jews and gentiles has narrowed substantially from what it was when I was knee high to a grasshopper. Back then upper middle class gentiles (WASP's in particular) correcting for these factors were Pub in general, and Jews Dems. That is far less true now. Hey, I helped narrow the gap in recent years. My parents were Pub. I am quite confident that if they were alive, they would not be now. The issues that divide have fundamentally changed.

Yeah, I don't know if Jews in Chevy Chase or Chappaqua or Newton vote that differently from their non-Jewish neighbors.

[King of Kensington]

Not so sure about that, I would think that Jewish voting behavior is more "distinctive" in more conservative metros.  Also Jewish voters in the NYC area are likely to the right of Jews in the Midwest and South, given the high percentage of Orthodox/traditional/Russian Jews.