United States citizens leaving after presidential elections?
The popular press has reported that the Canadian immigration service website crashed shortly after the results of the election. See Fox News, Nov. 9, 2016, Canadian immigration website crashes during election
It will be interesting to see if there will be a surge in United States citizens, not just the accidental American living outside the U.S., who will be inclined to renounce citizenship? These are not easy or legally simple steps, as various posts in 
this website explain. At a minimum, the individual must have citizenship in at least one other country, so as not to be left stateless.
It could be very difficult to mathematically determine whether this comes to pass, simply since the data provided for all names of individuals, does not include where they reside currently and for how long, inside or outside of the United States.
Of course, some may desire to move and live outside United States, without actually remounting their United States citizenship.