It was the content that did the damage not the timing. There was a lot of unethical and illegal activity that was exposed. Those implicated are are not fit to hold office.
The Podesta leaks began 1 hour after Trump's pussy-grabbing video was published, and continued every single day until November 9th. The timing was absolutely strategic and politically motivated. If you still think the timing wasn't relevant, I have a bridge to sell you.