The challenger, Ryan Frazier, is being pretty annoying and keeps waggling his finger in what I would say was Perlmutter's air space. This makes me laugh every time I watch:
Poor Perlmutter! He's behaving in an instinctive and not genuinely violent way. It's actually pretty friendly, and Frazier had to know he was wielding that finger annoyingly. But Perlmutter touched! Do not touch! And Frazier does such a perfect "Don’t hit me man. Come on."
To help you organize your reaction to the incident: Perlmutter's the Democrat, Frazier is the Republican.
CORRECTION: I typo'd "laps" for "slaps." Ha ha. What a picture!