IMHO, people are reading this situation incorrectly. This attack wasn't supposed to attract independents/undecideds, because, like someone said before, those aren't making up their minds based on speeches like this one. This attack was directed to the so-called "base". Romney has convinced himself he has to drive up conservative turnout to have a chance - after all, he knows the base dislikes him. To do so, he has to make Obama look "Jimmy Carter weak". On that sense, I think he might be successful.
I'm going with something like this statement above.
