The way I see it there are going to be enough people vote for Gary Johnson that will come from the Hillary camp that are there because they think she is the least of 2 evils. If that happens it could win the election for Trump. And yes we will all still be here the day after but 4 years after who knows. The people in the Trump camp are there because they want to be the people in the Hillary camp are there because they think she would be better then Trump not good but better and along comes Johnson who has enough supporters that it could very well throw the election right into Trumps lap.
Just a little History ..
The last strong showing by an Independent was Ross Perot in 1992, who garnered 19% of the Popular Vote, yet no Electoral Votes .. the winner-take-all manner of allocating a state's electors always decreases the ability of Independents to gain any real traction .. it's the way the System is set up ..
94 percent of Perot’s voters were white and early on grabbed a lead over Bush / Clinton, using an isolationist, Nativism mantra ..
The lessons of Perot show how quickly things can change for a candidate so singularly focused on his own money, his own ego and his own image. As well, the Demographics of the Country have changed fairly dramatically since 1992 ..