people LOVE to see conflict. In the debates, which are typically a bunch of canned stump speech lines + a few "my opponent, whom I respect greatly, would like you to believe this policy..."
It'll be a whole new ballgame with trump in the debates. Trump saying things like "This man is lying to you - Rubio, why are you lying, you're worse than obama" and instantly, Rubio's campaign is over like that.