This debate was a mess. I doubt that it changed anyone's mind, and I have a hard time seeing how anyone learned anything new from it. In general, Trump dominated tonight, both for good and bad reasons for him. His aggressive interruptions appeared designed to fluster Biden, and at the beginning I think it was working; certainly it prevented Biden from making his case to the audience. Later on in the debate, though, Trump had some bad moments, such as not condemning white supremacists and viciously attacking Biden's son. So in the end I don't think he appealed to anyone outside his own base.