With Ball in Bush's Court, Can He Keep the Bounce Going?

Mentions the polls over the weekend again. One question that I'm sure the pollsters considered was that is was a holiday weekend. With many folks travelling and resting up for the Fall, are those numbers good? Could they be off? Is there a possibility that the "bounce" is only an illusion? I don't like it when the media take these polls as gospel without examining/explaining possible errors in the poll data.