FYI, the 538 polling average is up to Biden +8.3% today (from Biden +7.6% on August 6). More significant than the lead, however, are Biden's actual polling numbers. His average poll number is 50.1%. At this point in 2016, Clinton led by about 6%, but she was only polling around 44%. For Trump to win, he has to convert a significant number of people currently supporting Biden and that's a lot more difficult that converting undecided voters and third-party supporters..