The last minute rule changes by certain states like PA.
The media trying to control the narrative and call the election, on their own accord. Even Fox is in the hole on that. Not their place but they did have an agenda.
Don’t be more of a cnut than you have to be.
The media have ‘called’ every election since whenever. I don’t recall the Donald saying ‘now folks, let’s not be premature’ in 2016.