You may be right, although there can be a "too close to the election" if it means there isn't enough time to go through the documents to find anything incriminating, and/or for the information to spread.

In this case, it's highly unlikely that it will change the election's outcome, given that Macron has a solid 20%+ advantage in all recent polls.

It also bears repeating that debate about the Comey letter is somewhat silly in that it usually treats "Comey swung the election" and "Hillary made mistakes" as mutually exclusive options. In reality, it's almost certainly true that they both, as well as other reasons, were necessary conditions for a Trip win.