Early in Donald Trump's current candidacy, the charge was made that he was too inexperienced and uneducated to be President of the United States. Trump's response to that was that he would hire the best people to help him run the country…and a lot of voters bought that. I think one of the reasons he's in trouble now is that it's become pretty obvious that he doesn't know how to hire the best people to run his campaign.
As Ezra Klein notes, Trump really does keep hiring the wrong people. They keep sending this woman Katrina Pierson out to speak for the campaign and to either reverse what Trump said or deny he said it or to even deny the meanings of words. I could do a better job on his behalf and I want to see him lose by the widest-possible margin.