I mentioned this during the Republican primaries and all I can say now is, “Here we go again!”
Most delegates at the Democrats’ convention are allocated to candidates based on the results of caucuses and primaries. Super delegates are automatic delegates, entitled to that position by virtue of their status (You peon voters have no status! ~ Norm) as either elected officials (members of Congress or governors) or members of the Democratic National Committee. They are free to support any candidate they want. In this cycle, most of them committed to Hillary Clinton, and many announced that decision before the voters first got involved in the process.
Super delegates serve two good purposes. One is to allow important (You peon voters are not important! ~ Norm) people in the party to attend the convention as delegates. The other is to provide a backstop for the voters. If no one in a multi-candidate field has a majority of regular delegates, the supers can put a candidate with a plurality of votes over the top. They can also give a candidate with a slim majority a more comfortable margin of victory.
Congressional Record--Appendix, pp. A34-A35
January 10, 1963
Current Communist Goals
EXTENSION OF REMARKS OF HON. A. S. HERLONG, JR. OF FLORIDA
IN THE HOUSE OF REPRESENTATIVES
Thursday, January 10, 1963