Take advantage of Trump's exclusion.

Dear GOP candidates, you're in luck, now that Donald has decided to exclude himself from the next GOP Presidential Debate, hosted by FOX.

Don't mention his name, don't allude to him, don't acknowledge his policies or his existence. Make it as though he was never part of the group in the first place. Out of sight, out of mind, people.

Seeing as you keep screwing up the art of rhetorical attack, this is probably the easier route to follow.