Politics Magazine
The chart above shows reaction to the recent FBI Director's letter saying the investigation of Clinton would be resumed because new e-mails had been uncovered, even though none of those e-mails was written by Clinton or sent on her private server.
The chart is from the YouGov Poll. It was done on October 28th and 29th in thirteen battleground states, and has a margin of error of 1.9 points. The states were Arizona, Colorado, Florida, Georgia, Iowa, Michigan, North Carolina, New Hampshire, Nevada, Ohio, Pennsylvania, Virginia, and Wisconsin.
It looks like the FBI's silly revelation will have little effect on the election. It hasn't changed the minds of any Clinton voters, and the Trump- voters were already opposing her. About 1/5 of the undecided and other candidate voters said it would make them less likely to vote for her. But the other candidate supporters weren't voting for her anyway, and there are very few undecided's left.
It looks like Trump's big October surprise is more of an October dud.