“I’m in the dark on this as well.”
Why?
Is Trump the head of the Republican Party? When Trump was running wasn’t Priebus the chairman?
And, was Hillary the head of the Democrat Party?
I will reference you to this other story, where it says temporarily steps down. That causes me to think we’re dealing with something different than the examples you gave.
http://www.freerepublic.com/focus/news/3546938/posts?page=24#24