If anybody's still undecided about whether to vote, they may want to see the two candidates face off head to head and if one backs out it will be seen as cowardly -- as conceding the election.
Rudy, if you're so smart, wouldn't you be up on that stage as nominee?
The only thing Trump needs to do that is outside of the normal debate preparation is to come to the debate ready to turn the moderator's bias against him/her.
It doesn't have to involve getting in an argument with the moderator. If the moderator makes a point that Trump knows is incorrect, he should simply say: "That is wrong. Please back that up with evidence and cite your source for it. Otherwise, there's no reason to respond to it."
Do that once or twice, and the moderator will be back on his heels for the rest of the debate.
The headline is misleading....Rudy only stated a wise pre-condition that Trump should demand....