I'ma cut to the chase and say the next POTUS will be $hillary Clinton.
GOP is full of in-fighting and it's fracturing between the moderates, Tea partiers, and other smaller groups, while the Democrats have kept it together over the past decade. A brokered GOP convention is becoming more and more likely by the day, Trump is not even close to being popular with the general electorate.
Everyone has been saying for the past 40 years or so Hillary will be going to jail. I doubt it, they've been crying for her arrest since Watergate. I'll believe it when I see it. Hillary is popular with the black and hispanic demographic which is key to capturing the presidency. The GOP can't capture their vote by any means. Most Bernie supporters will likely vote Hillary, they'd much rather take her if they can't have Bernie. We saw what happened with Ralph Nader which fucked over Gore and got us stuck with Bush, I think Democrats and Independents know better this time around.
Democrats also have a solid control on a number of key states, such as California which has a huge delegate count, and will have the entirety of New England with only New Hampshire possibly voting Republican. We're seeing traditionally red states become purple or even blue states in this cycle. People would rather have Obama 2.0 over the disaster that is Trump or Cruz.
It's all over, Clinton will beat Sanders...
But at least Trump will win the GOP and he couldn't beat a paper towel in the real thing.
I'm not quite sure he'll absolutely capture the nomination, it's looking more and more to be a brokered convention. It's really up in the air right now but it's a real possibility. Cruz and Kaisch are basically joining forces to force a brokered convention, and if that happens Trump will likely go independent. He'll pull a Ralph Nader.