I’m hoping that Obama does for Jewish support for the Rats what Nixon did to black support for the GOP. But I’ll settle for a 15 percent erosion. Every little bit helps.
That would be a poor analogy, since blacks were voting strongly for the 'Rats (though not 90+ as they are today) long before Nixon ran for president - since the New Deal, actually. No, actually Nixon got perhaps 30% of the black vote in 1960, then Goldwater got no more than 10% of the black vote in 1964. Since that time, no GOP presidential candidate got much more than 10% of it. So you can say that it was Goldwater's candidacy (wrongly, IMO, because he was not a racist) that had much more to do with turning off black voters to the GOP.