One thing: state polls are ALWAYS a lagging indicator. If the Gallup projection is accurate, we’ll see Romney take big leads in key swing states.
I think it will happen after the last debate.
That certainly seems to be true in this election (look at Gallup or even at Rasmussen's swing state poll v his individual state polls). But why is that the case? (I'm asking honestly...I've heard this stated before but never the underlying theory that makes it so.)