>


Guess what voters use to determine who they vote for.

Probably not your personal opinions about the man. Your article has a pay wall so I can't read it but it's from before any of the 2020 primaries... I asked for a source for him "blowing the biggest lead in Democratic primary history", it would be pretty wild if he managed to do it before the first primary.
ok, and, as the article mentions, the vast majority of independents vote for one party overwhelmingly. 
People seem to love to talk about the fact that people choose not to identify with parties as much as they used to. Party identity doesn't matter though, votes do. >

Why do you think Sanders got even less votes in the primaries the second time he ran?  What's the conspiracy theory that explains that? >

Significantly more candidates running? >

How about squandering four years of name recognition, hiring terrible PR people and otherwise blowing the biggest lead in Democratic primary history by failing to speak to people of color? >


How about squandering four years of name recognition

Subjective 

hiring terrible PR people

Subjective 

blowing the biggest lead in Democratic primary history by failing to speak to people of color?

Source for him having the biggest lead "in democratic primary history"? And how did he fail to speak to people of color?