I'm not a Trump supporter nor i am American, i tend to avoid threads involving politics but i'm pretty sure Trump will be the next US President.
Well there are 2 things that make it less than likely and they're both about rollovers. When candidates are competing for their party and one looses a majority of their candidates roll over to the winner of the party (like Hillary/Obama in 2008, most Hillary supporters went over to Obama) but this year it's a little different.
1) A lot of Cruz & Kasitch supporters REALLY don't like Trump & even though most of them also don't like Hillary, they're are plenty that would rather roll over to a third party or not vote at all because they don't like Trump either (the majority of noise I've heard so far from actual people)--so Trump will loose a good bit more Republican support than usual.
2) Hillary won't get all Sanders supporters but she won't loose as much as Trump--which gives her her biggest lead.
Even if she dose a TERRIBLE job if she gets elected she WILL get 2 terms (and 16 years in a row of either party in the office is BS) because the Democrats have stated they're choosing her over Sanders & even if Sanders wins the "super delegates" (more political BS) can still shoot him down & choose Hillary which they've said they'd do.
I personally don't like the idea of either of them being president but that's my opinion & I'll deffinately be voting third party.