However, as the latest set of polls shows, the Donald is not the only thing Hillary's campaign has to worry about as a new threat has emerged. Or rather two.

A new Quinnipiac University poll shows that is Clinton suffering thanks to third-party nominees Gary Johnson and Jill Stein, whose support has soared among millennial voters. In that poll, Clinton leads Trump by 48% to 43% in a two-way match-up. Her head to head lead is particularly pronounced among voters aged 18-34, who pick Clinton over Trump by a margin of 55% to 34%.

But when Johnson and Stein are included in the survey, Clinton's lead over Trump falls to just 2%, or 41% to 39%, with Johnson at 13% and Stein at 4%.