http://www.gallup.com/...
Gallup indicated today that democrats have reestablished their doublr digit party ID lead 49-39. The lead had been cut to 5 after the republican convention.
This can definitely have a major effect in future Gallup polls as well as other polls if the new numbers are picked up by other polling firms.
I know there has been some consternation about the Daily Kos poll using a 9 point voter ID model, now this finding by Gallup reinforces the use of that kind of difference.