The Republican National Convention is probably going to pick Donald Trump, Ted Cruz, or (much less likely) John Kasich. Since 1972, every major-party presidential nominee has come out of the primaries and caucuses, and GOP voters seem to have little appetite for breaking with that practice. Moreover, it is not even certain that the convention will adopt rules allowing for the nomination of another candidate. A dark-horse nominee seems impossible.
And yet, 2016 is the year for believing six impossible things before breakfast. Just 12 months ago, who would have thought that Trump would be the leading candidate – or that many “establishment” Republicans would see Cruz as the best alternative? So imagine that multiple ballots result in deadlock, and that convention procedures allow delegates to pick anybody they want. Who could emerge?