I do wonder if Trump will end up dumping Vance or not and what kind of effect that would have on the race. Will he be too proud to change his mind or will he immediately disavow Vance like all the other 'best people' he's handpicked and then turned on over the years? Would changing VP's be received well like the Dems changing presidential candidates or would it just make them look even more incompetent? How easy or difficult would it even be to make such a change post-convention?