I don’t know, but in some ways, the lack of a contested convention makes it easier for them. There’s nothing compelling them to endorse Trump or endorse #NeverTrump — they can just stay silent on him and see how things develop. To some extent, it could be a bit of a self-fulfilling prophecy. If Trump’s polls against Clinton still look bad a couple of months from now, a lot of people will want off the train. If he’s in a competitive race, I think the blue-state Republicans will still keep their distance, but many of the purple-state ones will come along.
