.....The voting is now all but over, but Sanders is apparently going to continue to try to persuade super-delegates to support him.

The problem for Sanders is that this now requires him to explicitly call on the super-delegates to overturn the will of the voters as expressed in Dem primaries and caucuses. Given that she currently leads among them by 571-48, this would require a massive stampede away from the person who won far more votes.

Merkley — who is a super-delegate himself — said flatly that Sanders should not pursue this course any longer. “The super-delegates are set aside when you make the judgment that you have a majority of the pledged delegates,” Merkley told me. “I would not support a battle that involves trying to flip super-delegates.”

Grijalva, meanwhile, told me that he expected Sanders to continue trying to win over super-delegates, but only for a limited period of time.

“The reality is unattainable at some point. You deal with that. Bernie is going to deal with this much more rapidly than you think,” said Grijalva, who is also a super-delegate. “At some point, when we’re trying to flip 400 super-delegates, and it’s not gaining traction, I think you have to come to the conclusion that it’s not going to happen. You just move into a different direction. And that different direction is that we begin to try to integrate the party.”.....

https://www.washingtonpost.com/blogs/plum-line/wp/2016/06/08/top-supporters-of-bernie-sanders-gently-tell-him-its-time/