Eligible for the "obvious" list may be any of the Republicans who "agreed" with the qualifications of the selected moderators; all three are anti-Trump as a matter or record.
OTOH, one wonders if the supremely confident Trump armed with a strong record agreed with participating in a completely biased forum..."let's have it out, give me your best shot".
“...one wonders if the supremely confident Trump armed with a strong record agreed with participating in a completely biased forum...”let’s have it out, give me your best shot”. “
My take.