If he won't debate her, then I think after every one of his rallies she should start dropping tiktoks, youtube shorts, or whatever, where she replays something he said, and then debunks it with hard facts.
Honestly, I love this, but I think the impersonator aspect cheapens it. Take clips of things he’s said and play them on a screen behind a podium across the stage from her. Have a moderator prompt the clips, have her rebuke/fact check them. Done.
He doesn’t want to debate? Fine, we’ll have the debate without him. He’s already said what the people need to know. We just need to cut through the mountains of indecipherable bullshit he’s said while meandering around the point. Do him a favor and edit that down to his actual stance, as succinctly and clearly as possible. Don’t turn it into a joke making fun of how terrible he is at speaking, show people what he really wants to do.
His three election foes as the three-headed knight. Harris could be the head that wants to kill him. Hillary's the one that wants tea. Biden is the one with the hiccups.
This reminds me of The Princess Bride. That moment when Inigo finally runs into the six-fingered Count Rugen in the castle hall, and finally says "Hello. My name is Inigo Montoya. You killed my father. Prepare to die," proving his drivenness. And then he gets into position, and levels his sword at his foe, proving his competency. And then Rugen gets into position. And levels his sword at his foe. And...turns on his heel and sprints in the opposite direction.