In the next debate if the third party question comes up Trump needs to ask the other candidates and the audience, if I win the nomination are you prepared to support me? Then ask Little Jebbie directly is your cronies in the GOPE going to support me? Turn about is fair play.
No, he should not respond that way because they will just say “of course” which leaves Trump in the position where they’re pledging loyalty to him while he’s not doing the same. *WE* know they would break that loyalty in a minute but that wouldn’t matter. The question and answers would be on video record.
Now that this “GOP Attack” is public record, his best response is to attack the question itself. “I have no reason to take that pledge when the party is actively working against me. They are not dealing in good faith. I know how you make deals and good faith is the single most important cog in any deal.”
His response should be something like that.