I don't find that too plausible. Sure there was anti-Clinton sentiment, but opinion polls showed far more anti-Trump sentiment. Iraq is seemingly forgotten by the electorate, it wasn't a hot button. He supports far less regulation than she does. The data that always jumped out at me was just how many conservative voters believe unequivocal myths like creationism or Obama is a Muslim. I think at some point you just have to acknowledge a huge swath of voters are utterly ill-informed and there's very little you can do about it.