The American Jew, for the most part, uses the Holocaust connection to their professed religion as a convenience of argument and validation for whatever liberal screed they want to put forth. The American Jew will still vote for Democrats, and thus OBAMA in supermajority numbers. They cannot help but do it. Wondering why they do this should not be connected at all with confusion about the Holocaust and persecution, etc. and how illogical it is. They are liberals, and avid liberals at that for the most part. They will remain this way.
The bottom line is different people interpret experiences and events differently. I know many who look at the Holocaust as a loss of civil rights for minority groups (Jews, Gays, Gypsies, and people with different political beliefs). Therefore they are reluctant to vote for a candidate who they believe will restrict rights they believe people are entitled to. Of course different people have different ideas about what those rights are.
I do think that fewer Jews will vote for Obama in 2012 than in 2008, but I have no idea if that means just staying home. What I am sure about is that voting Democrat had nothing to do with being self-hating or actively participating in their own persecution.