Bernie Sanders trails Hillary Clinton. Even though he can't catch her, he refuses to concede. He he will try to convince the super-delegates that he gives the Democrats the best chance to win.Clinton insists that the nomination is all but official. She will be the nominee. The problem is that recent polls show her slipping against Donald Trump, the Republican nominee. The same polls show Sanders leading Trump by double digits. Sanders has a good argument, if you follow the polls. Clinton and Trump are in a statistical dead heat, each with about 40% of the vote. The other 20%, undecided, mostly are Sanders voters. Sanders, with his support and Clinton's, opens a large lead over Trump.
Super-delegates in the Democratic Party process were intended to smooth out some of the potential problems that crop up in primaries. In a sense, they are successors to the party bosses who ran conventions in the past. If the goal is to win the White House, they should be taking a hard look at the Sanders campaign. However, Sanders has railed against Deborah Wasserman Schultz, the Convention Chairperson who supports Clinton. Presumably, she is not giving Sanders a fair hearing.
This spring we witnessed the Fall of the GOP. Turns out, the announcement of its death was exaggerated. In the end, Trump and the party regulars, with a few notable exceptions, seemed to kiss and make up. We didn't realize that the Democrats were playing out the same drama, but they are. There has been no rapprochement between Sanders and the party apparatchiks so far. Many of Sanders' voters will not vote for Clinton, Some consider her a "monster."
The Democrats have made the mistake of viewing the 2000 election as an anomaly. The Supreme Court stopping the Florida recount was a once-in-a-lifetime event. However, the threat of a third-party run dividing the electorate is common. The Democrats stick to the narrative that Ralph Nader played the role of spoiler. They refuse to address the schism in the party that enabled Nader to make a meaningful run.
The Democrats are about to do it again. In order to win nationally, the party moves center and marginalizes its most progressive members. They are Sanders' supporters, and many of them will be damned if they'll vote for Hillary Clinton. For them, she epitomizes the Corporate Democrat. Sanders won't have to stage a third-party run like Nader. Bernie's voters will stay home, and the Democratic Party will lose its left flank and the White House, with no help from him.