Harris makes history tonight by accepting the vice presidential nomination, but one thing I've been struck by in this virtual format is just how hard it is to replicate some of the more traditional aspects of the convention -- like giving an acceptance speech. The intimate style of ordinary Americans sharing their stories or Michelle Obama talking from her home, as she did Monday, just resonates more in this format. But I understand why Harris spoke on stage tonight, and I assume Biden will do so tomorrow as well. It's just harder to land those lines.