Jennifer Lawless, professor of politics at the University of Virginia whose research focuses on political ambition, campaigns and elections, and media and politics: “The first presidential debate may very well not be remembered for anything other than chaos and Donald Trump’s complete and utter disrespect for his opponent, the moderator, and the Presidential Debate Commission’s rules. In some ways, that’s understandable. Trump’s interruptions, personal insults and basic refusal to comply with the format made it difficult for viewers to focus on the substance of the candidates’ answers. But tha...