Supporters of Donald Trump are playing a game of chicken with the Republican establishment. Trump supporters are expecting establishment types to clamber aboard the Trump bandwagon rather than (1) form a third party, (2) support Hillary Clinton, or (3) stay home on election day. Establishment types (such as George Will) are expecting Trump supporters to abandon him for an establishment candidate rather than (1) form a third party, (2) support Hillary Clinton, or (3) stay home on election day. In other words, each side expects the other to give in. If I had to guess, I'd say that Trump supporters are less likely than establishment types to veer off the road. It's going to be an interesting summer, that's for sure.