So because someone asked me what superdelegates were I'll give a rundown (and they asked about Trump so just ignore this post if you didn't ask the question lol)
hihi
Super-delegates are elected officials, DNC chairpersons, and "special" democratic personnel (like former presidents) that are given a full delegate worth of a vote at the democratic convention. They are unbound, meaning that no matter what candidate wins the state they may represent, they are free to support any candidate they choose. Would I personally like them to support the winner of the state? Yes, but it doesn't matter because they have their own intentions. Democrats want to win in November so they will want to cast their vote for whomever they feel is the most electable
the good thing about this is that democrats can avoid a "Donald Trump" like candidate (say Dukakis when he got routed) because if the fringe candidate and the more acceptable (to them) candidate are close, they can push their preferred candidate over the edge. It's a built in safety net
The bad thing is that it can be very un-democratic. It's technically POSSIBLE that there is a candidate so loved by the people that the establishment doesn't like so they'll, en masse, vote for the other candidate come convention time. However we had this super delegate system for 30 years and not once has it voted against the majority delegate winner when coming to the convention. They only make a decision that important in close elections because their powers are limited.
Oh and as for Donald Trump. Right now he's the front runner (weakest in modern history though) of the republican party but because of how undemocratic the RNC is (yes, even moreso than the DNC) they are, as of right now, robbing him of the nomination. There are some states that have all unbound delegates that are free to support whoever they want, no matter who wins the state. There are some where people don't pick their preferred candidate but instead pick delegates, who they don't even know and don't know who they will end up supporting, instead. And then there are some states that have bound delegates but will vote against the candidate anyway. Last week Trump has been robbed of so many delegates, even in states he has won, because of their system.
If the convention is contested (meaning no one person has the majority of delegates needed to clinch the nomination) there is a chance the person who has a plurality at that time may not get the nomination, the other place finishers may not get it, and a brand new candidate, only introduced at the convention, could even get the nomination. THAT'S what you call undemocratic. Trump has been cheated time and time again. His week last week was awful.