According to YouGov’s post-debate poll, which interviewed 812 registered voters who watched the debate, Hillary Clinton won the debate against Donald Trump by 47% to 42%. Clinton narrowly won undecideds 44% to 41%. She was also considered “more Presidential” by a 57% to 31% margin. There was a gender gap, however: women thought Clinton won by 50-38%, while men thought Trump won by 46-43%.