He did not do what he had to do to be an effective campaigner for her in 2016. He needed to apologize. He needed to say he was wrong, that there was no basis whatever for the smears of 'rigged election' and 'corruption' his campaign leveled against Mrs. Clinton. He need to tell his supporters unequivocally to stand down at the convention, and to ask the credentials of those delegates of his who disrupted be revoked, and the disruptors be expelled. He needed, when he made campaign speeches, to speak only of Mrs. Clinton, and what a fine President she would be, rather than simply trim his stump speech with a few compliments, and proceed to boasting aout his 'success' in the primaries and how he was the future of the Party.
'Bernie' of course could not do any of this. He still lives in the 'chicks make coffee and worship radical warriors' mindset he acquired as a young college Marxist. The very idea of 'Bernie' apologizing to a woman, of taking a backseat to a woman, acknowledging a woman beat him fair and square....
"Your attitude is noticed! Oh, yes, it is noticed!"
"From Bernies perspective, dropping out of a race once you have no chance of winning is peculiar behavior that can only be explained by the work of a hidden hand. For most politicians, though, it is actually standard operating procedure. Only Sanders seems to think the normal thing to do once voters have made clear they dont want to nominate you is to continue campaigning anyway."
"When things are not called by their right names, what is said cannot make sense. When what is said does not make sense, what is planned cannot succeed. When plans do not succeed, people become uneasy. When people are uneasy, punishments do not fit crimes. When punishments do not fit crimes, people cannot know where to put hand or foot."