A good point made (at fivethirtyeight.com) regarding McCain's slight gains in some polls over the last week:
Obama is showing somewhere around 6, 7, or 8% leads (11% on Gallup!). Over the last 20 years, the largest spread in a general election has been 8.5%. So Obama's pushing the bounds of how far he can swing the electorate. With that big of a lead, there's pretty much nowhere for him to go BUT down. There are certainly fewer and fewer undecideds to gain. So a point or two back in McCain's direction is not surprising, nor particularly significant.
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