Lately, the Democratic nomination race has become just as much as fight for superdelegates as it is a fight for popularly elected delegates. The front runners have started stated debating whether or not superdelegates should vote on their own accord or with their districts.
Dubbed “superdelegates,” they’re free to endorse whomever they want, to switch back and forth between contenders, or to wait until the convention to make their choices.
Delegates elected in primaries are pledged to cast their vote at the convention for a particular candidate, but party rules don't require them to do so. The party rules ask such delegates to “in good conscience reflect the sentiments of those who elected them.”
I think super delegates should vote on their own will. Let them change their minds (John Lewis). Let them vote against their district - since they don't all have districts (some superdelegates are just DNC leaders, and not in Congress). They add some spice this already interesting race.
And in case you have been living under a rock and have no idea what a superdelegate is, here is an educational video, courtesy of VideoNation: