Answers

1. The donkey is the symbol of the Democrat party.  Only the Democrat party has superdelegates.
2. Superdelegates are current or former Democratic elected officeholders and party officials. (Bill and Hillary Clinton are super-delegates, as is Barack Obama.) They are free to support any candidate for the nomination.  At the 2008 Democratic National Convention the superdelegates will make up approximately 20% of the total number of delegates. (from wikipedia.org)
3. Lang questions whether superdelegates lessen the power of individual citizens’ votes.
Read more about Super-Delegates here and go to the “Questions for this Article” for links to further information about super-delegates.