It'll be interesting to see a third party candidate actually win EC votes, which hasn't happen since 1968 I believe.
HRC is the next President anyway. This will change nothing. McMullin, Castle, Johnson are all chasing the same pool of voters, who would normally be voting GOP. That the election would go to the 12 amendment is delusional. If you could convince HRC voters to go 3rd party... maybe. But they're pretty much falling in line behind Clinton as expected, like the mindless robot chumps they are.
With the right wing vote split, the left will have free reign over the entire country. Conservatives are truly stupid, as liberals have been saying all along. I must concede that.