Why is it the majority of Jewish voters support?

Why is it that the majority of jewish voters support a party that is overwelming anti Israel "Democrats"and a candidate that is a heavy supporter of the anti israel population in the middle east usa &rest of the world ''Barak"?I look at Israel as an island in the middle east that if Barak is President wont have a frend in the White House but the PLO, Libya, Nation Of Islam,Syria etc. will.