Via Volokh (1, 2), a months-old but still-appalling study I hadn't seen before:

In order to assess explicit prejudice toward Jews, we directly asked respondents "How much to blame were the Jews for the financial crisis?" with responses falling under five categories: a great deal, a lot, a moderate amount, a little, not at all. Among non-Jewish respondents, a strikingly high 24.6 percent of Americans blamed "the Jews" a moderate amount or more, and 38.4 percent attributed at least some level of blame to the group.

Clicking through, I found this similarly appalling (but not-at-all surprising) result:

Interestingly, Democrats were especially prone to blaming Jews: while 32 percent of Democrats accorded at least moderate blame, only 18.4 percent of Republicans did so (a statistically significant difference). This difference is somewhat surprising given the presumed higher degree of racial tolerance among liberals and the fact that Jews are a central part of the Democratic Party's electoral coalition.

Although the author appears a bit surprised, given the "presumed higher degree of racial tolerance", the result is consistent with other studies which show that support for classical racism and socialism tend to go hand-in-hand.

Oddly, a few hours ago, I caught a few minutes of an interview with conservative pundit Michelle Malkin on C-SPAN2; a caller was informing the national audience that Michelle was reflexively in favor of Israel because her husband was a Zionist Jew. Michelle was, understandably, a bit surprised to learn her husband was a Jewish Zionist. I somehow doubt her critic was an ardent Republican.