The FBI is seriously mucking with this election.
Everyone is messing up. If Trump had a brain [hypothetical of course] he would keep quiet about the emails. It is out there to see, go on to other stuff.
If Hillary was smart she would keep cool. Arguing about the new probe just screams "emails." Complaining about the FBI takes away whatever high ground she has to quote Trump saying the election is rigged when she is now saying the almost the FBI is trying to rig the election. Arguing with a person with a sign saying Bill is a rapist just highlights them.
In a normal election both candidates would be talking about their plans, but nobody said this is a normal election.