I will be surprised if the debate last night changes anyone's minds. I could just as easily imagine Trump supporters pumping their fists at his lines as I could predict the crowing posts that I knew I would see here in my mostly-progressive feed.
Politics in America is treated like a sport. You already know which team to root for: either the home team or the one your parents side with, most likely. Nobody cares about any outcome except winning. These TV events are staged for ratings and ads.