There is a very interesting rumor from behind the curtain. What they are concerned about is that Trump has raised more from small donors under $200 than any previous Republican in history. Even John McCain in 2008 and Mitt Romney in 2012 collected less than $64 million. They are concerned that more small people are donating to Trump and that means it is the small people who vote, whereas hedge fund managers and bankers can give her millions, but one vote.
This election is really going to be The People vs the Rich. And yes, Trump stands for The People.