[Bloomberg can slip each Super Delegate a couple million under the table - he’s got it in the bag. :)]
PACs and charities - completely legal. And $50K is probably more money than any superdelegate has ever been offered. Not to mention the promise of eternal gratitude (i.e. government contracts, jobs, etc). $40m for all of them, which would be fairly cheap, relative to the cost of Bloomberg’s campaign so far. IMO, he needs at least 1000 delegates of his own to credibly challenge Sanders, if it comes to a second ballot. We’ll see how far he gets with that.