At this point: that would be a bad kind of fiction. He wont win.
Also, for people interested, some text from todays fivethirtyeight newsletter:
If there happened some big terrorist attacks in USA before election it could maybe turn the tide I guess.
I'd almost (sadly) bet money something like that will happen if there is any indication Clinton is a sure victor early before November...
I'd think terrorist attacks would be more likely if it looked like Trump was going to win, just because of his over the top shit. The establishment isn't on his side because at this point it looks like he's more of an unwitting asshole than a plant to get Hillary into office.