I'm not at all. throwaway123156 put it well above, but there is not, in my mind, corruption. The Democratic party is a private group that defines it's own rules, including how a candidate is selected. (The same is true for the Republican party - see how primary votes per state are allocated differently between the two parties). The Democrats had a rule that allowed _actual_ members to have an increased count in their vote (superdelegates).

Additionally, Bernie was _not_ a member of the Democratic party - he was an independent caucusing with the Democrats who chose to run as a Democrat. There a lots of good reasons for party members to not back a candidate who chose not to be a member and buy into their ideals until it was (potentially) advantageous for him to run as president.

Oy. If nothing else, Bernie is an independent. The Democrats are not his party. They are his natural allies, or should be, and he understood U.S. elections well enough to know that if he ran as a third-party independent he and the Democrats would both lose, electing their natural antagonist: whichever Republican. So, in sum, Bernie ran in the Democratic primary to be the Democratic candidate, but he was not and is not a Democrat.