Since election night frivolity was specifically excluded, I suggest this:
The Iowa caucus in which the Cruz campaign imploded over the fraud the pulled by circulating the false rumor that Ben Carson had suspended his campaign.
Even though Cruz won the caucus and Trump lost, that was arguably the inflection point of the campaign, and the moment I dumped Cruz for Trump.
MAGA!
Oops...the = they
I’ll let you add something for election night; I just knew those two in general would be everyone’s favorite. ;)