Steve Hayward's chart for today's Power Line concerns voters net sympathy for Israel, calculated by Gallup as "% more sympathetic toward Israel minus % more sympathetic toward the Palestinians." This is cross-tabbed with party affiliation. Note a majority of Democrats are more sympathetic toward the Palestinians, hence a negative result.
Historically, American Jews have nearly been as reliable Democrat voters as blacks. An election under current conditions creates interesting dilemmas for them and for the party's policy makers.