I believe Trump started posturing for a Presidential run sometime in 2013, if I recall. Given that the OP was active pre_announcement, it stands to reason that announcement was actually part of the OP, which 'organically' followed from his Presidential musings prior to 2015/16. Also please don't forget that our President's twitter has become so powerful that he can actually make his enemies tell the truth…
>The stupid lives long within these people.
Arrogance and stupidity make wonderful bedfellows.
Because they didn't know their arch-nemesis was in the finals, they probably thought it was completely in the bag right up until the finals hours of 08 Nov 16