Innuendo can only take you so far. There needs to be some kind of substance. I'm sure there are people who are predisposed to be hostile to Obama, but they aren't going to vote for him anyway - to be effective the innuendo has to get to people who are inclined to vote for him, and some basis in fact is needed for that, I suggest. And having a father who deserted him at the age of two, and who was some kind of a Muslim, just doesn't stack up.