Yeah, doesn't mean Romney will convince any of the Trumpites to switch votes.
Of course not - the Trumpites are under a spell. But as sink says, the rest of us - disgusted by the prospect of this man as the nominee - are a majority, and we're growing.
And this has nothing to do with the "establishment". The "establishment" will likely make its peace with Trump, because they'll conclude they can deal with him. It's ordinary Americans who will resist and defeat the ugliness of Trumpism.