 Though the press conference was seen as an improvement over the debate, there were a few notable stumbles during and before the event, which could cause more angst with Democrats and voters. At an event before the press conference, he introduced Ukraine's President Volodymyr Zelensky as President Putin to the shock of other world leaders. And during the presser, he mixed up the names of Vice President Kamala Harris and his Republican rival, Donald Trump. I wouldn't have picked Vice President Trump to be Vice President.