The history of most modern presidential elections (with no incumbent) is that the early front-runners considered inevitable almost never make it.
History has been turned on it’s head.
The two frontrunners have never held political office.
That name sounds like an old rowan and Martin Laugh In joke.
TAFT '52!!!
Quite true, but there's been a sea change in American politics and the electorate in the last decade. The American populace is like a vast dry prairie, just waiting for the right spark to set off a conflagration that will wipe everything clean.
Already, Trump's performance in this race is turning 'conventional wisdom' on its head, and he's stymieing the best minds in the business. So far, he's broken just about every established rule of presidential politics, and has not only gotten away with it each time, he's actually grown stronger.
This election is unlike any we've seen in our lifetimes. The only way to understand it, is to throw out the well-worn textbooks, and apply logic and reason to it. Therein lie the answers.