 We are learning each day how to build a convention. If anyone tells you we have been here before, we have been in this building before. But this convention will be different. It will be exciting. The event marks the return of the convention to the United Center for the first time since 1996. Starting August 19th, close to 5,000 delegates from across the nation will arrive in Chicago, joined by 5,000 visitors to officially nominate Joe Biden and Kamala Harris for re-election.