I'd really like to know how they were chosen over other candidates.

Mike Pence seems like a better choice than Trump, even though the guy is apparently racist as well.
Bernie Sanders would have been better than Hillary, from what I have seen.

Didn't Bernie say that Hillary Cheated? Wouldn't be surprised if the same thing happened against Trump.

I don't like either candidate after all these past debates, I do think Hillary would be more tolerable, but who knows.