UPDATE: via Guy Benson, Politico Poll: Romney Leads on Almost Every Issue, But...
In other words, September polls are extremely volatile. And this year’s volatility is compounded by the late date of the Democratic National Convention. It was, in fact, the latest party convention in US history. And when the polls are bouncing around a lot, the chances are much greater that they will disagree with one another — which is exactly what we’re seeing right now ... So sit tight, politics fans: There’s plenty more to come.