You really believe that Sanders is running as his own person in the race?
He is simply in the race to make Hillary more moderate and to pull in the millennial voters, who have Googled Hillary and are aghast at all the scandals and representing the Washington status quo. That's it. Sanders is no more a serious presidential contender than the Lions' ex-running back Sanders.
It is a Potemkin primary. Hillary needs a make believe opponent to keep her name in the news. It is a coronation. The only fly in the ointment is a possible recommendation of an indictment. More than likely, it won’t happen because the FBI is politicized, including the career bureaucrats. Corruption is rife throughout the government.