Bernie's ultimate mistake was running against Obama's legacy in 2016.
That is why the blacks never took a liking to him.
Can you imagine the GOP candidate in 1988 saying that Reagan was a massive disappointment and that Ronnie Raygun should have been primaried in 1984? Such a candidate would have been shut the hell down. But liberals are waaaaaay too nice, and they allowed Bernie to run his yap.
lulz
Sanders just released an ad featuring Obama:
https://www.youtube.com/watch?v=5gcY2Fhr5wo
...but when asked about it, this is what he said:
“We have worked with President Obama. I’m not going to say he and I are best friends. We talk every now and then”
Sanders is making the same mistake over and over again.
You'd rather he lie?
How about using a nicer tone?
"I respect President Obama and am glad to have worked with him over his 8 years of presidency.
Although we achieved X, Y, and Z together, there is still more work to be done."
No one else can claim to be as close to Obama as Biden, but not being anti-Obama would help Sanders a long way.