I hope I made fairly clear that I was just stating percentages from off the top of my head rather than quoting formal polling results. I note that the poll of Elke's link asks whether people like Israel or Arab nations
better (or something like that), and do not compare attitudes about Israel and about the Palestinians. My point in presenting percentages off of the top of my head was to indicate that the situation in the US is that, among those who are active and aware about the Israel-Palestine situation, the Israel supporters have a strong majority, and that they have been able to maintain a majority support for Israel among the active-but-not-entirely-aware remainder of the voting population. I don't think you'll find any polls that seriously contradict that.