So convoluted title but I was curious and an trying to make sense of all of this.
Say, Hillary wins the nomination in April hitting the magic number 2,383 via pledged and unpledged delegates. She becomes the presumptive nominee.
Sanders still stays in the race.
As I understand, superdelegates can change their vote anytime, so hypothetically if they all magically vote for Bernie in the convention, he can still win the nomination even if a presumptive nominee has been declared? Or once a presumptive nominee has amassed enough votes, he/she stays as the nominee till the convention makes it official?
You use the words "presumptive" and "official" which suggests you already know the answer.