Based on a memo from campaign manager Robby Mook and delegate figures provided by the Democratic National Committee, Bloomberg Politics estimates Hillary Clinton has well over 500 superdelegate commitments, putting her even closer to securing the minimum number needed to win the party's nomination before ordinary voters cast a single ballot in a caucus or primary.
“Today, Hillary has more support from superdelegates than all the pledged delegates awarded in Iowa, New Hampshire, Nevada, South Carolina, and a third of delegates awarded on Super Tuesday combined,” Mook said in the memo, which was sent to supporters on Tuesday and obtained by Bloomberg. (Politico reported on the memo earlier Wednesday.)
In late August, Democratic sources told Bloomberg Politics that she had won private and public commitments from more than 440 super delegates. She added to that roster both before and after Vice President Joe Biden announced he wouldn't join the race, news reports and announcements from her campaign indicate.