Also, here is something else in the poll write up.

That said, the dynamics can continue to shift. While preferences in recent past elections have been stable, there are previous examples of wild rides. Most notable is 1992, when, among many gyrations, Bill Clinton went from an 11-point lead to a 3-point gap in six days late in the race - a shift much like his wife is experiencing in her contest, these 24 years later.

Well, that would be interesting, because the actual margin was 5.6%