a lot of these undecideds won't vote anyway. The trend will likely hold and swing more towards bush as people go for the 'devil they know'.
That's true about the undecideds, and Zogby has put all the undecideds in Kerry's corner - Brit Hume's gang was stunned to find that out and said that even historically there is no precedent for doing that. Even at best - they break about even, and then not all of them vote.