Taunts as to his court cases etc. should be met with calm descriptions of his appeals and concerns for the harm done to the country by "lawfare" being used to interfere with elections.
There are few if any "undecided" blockheads left. The lines have been clearly drawn. Few if anyone will be changing their minds at this very late stage of the game as everyone knows who the players are this time around. If people haven't figured who to vote for by now, they're a lost cause. It's like the tv crowd drooling in cups watching BS like the View. Forget them, they're not even salvageable.