As the 2016 Republican National Convention began, GOP chairman Reince Priebus spoke with confidence about the coming transformation of presumptive nominee Donald Trump. “He knows the pivot is important,” Priebus said. “He has been better and I think he’s going to be great moving forward.” Priebus was hardly alone. Republican leaders have been saying the same thing for months now, elevating hope over reality as they pretend that Trump might suddenly become rational and responsible, curious and consistent, honest and honorable.

Instead, Trump has been more volatile, more bizarre, more mendacious, and more reckless. In the time since he accepted the nomination Trump has, among other things: revived a crackpot theory on Ted Cruz’s father and the JFK assassination; suggested his adopted party is filled with people who don’t want to help others; invited Russia to influence the U.S. presidential election; smeared the parents of a fallen U.S. Army captain; trashed a retired four-star general; and appeared not to know that Russia had annexed the Crimean peninsula in 2014.