There were 6 people on the ballot (not counting peeps getting well less than 1%) and Sanders has a little under 50% (47% as I type this) of the vote. That is outstanding as he is way outperforming the polls which had him at 32-33 or so.

 
No one will break 50% until the field narrows.

I think the primary system is goofy.  People drop out because they run out of money.  That's a bad way to pick the best candidate.  Early voting gets people locked into a candidate that might stumble and then it is too late to move that vote over to another candidate, the early vote is thus thrown away.  Caucus is too confusing.  Who knows why they do it that way.
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I'd have a same day national primary.  Candidates could debate for weeks before the primary.  The voting would be multi-preference.  You pick up to three candidates.  (You can put the same name in all three slots.)  Candidate who gets the most votes is the nominee.

I posted this previously: http://www.theeroticreview.com/discussion-boards/politics-and-religion-39/predicting-the-end-of-democracy-342285?page=
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http://www.politico.com/magazine/story/2019/09/08/shawn-rosenberg-democracy-228045
"The Shocking Paper Predicting the End of Democracy" (Long article. Be prepared to READ.)  
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... "What caused the stir? Rosenberg, a professor at UC Irvine, was challenging a core assumption about America and the West. His theory? Democracy is devouring itself—his phrase — and it won’t last."
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... "Democracy is hard work. And as society’s “elites”—experts and public figures who help those around them navigate the heavy responsibilities that come with self-rule—have increasingly been sidelined, citizens have proved ill equipped cognitively and emotionally to run a well-functioning democracy.  
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..."The irony is that more democracy—ushered in by social media and the Internet, where information flows more freely than ever before—is what has unmoored our politics, and is leading us towards authoritarianism. Rosenberg argues that the elites have traditionally prevented society from becoming a totally unfettered democracy; their “oligarchic ‘democratic’ authority” or “democratic control” has until now kept the authoritarian impulses of the populace in check."
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... "“In sum, the majority of Americans are generally unable to understand or value democratic culture, institutions, practices or citizenship in the manner required,” Rosenberg has concluded. “To the degree to which they are required to do so, they will interpret what is demanded of them in distorting and inadequate ways. As a result they will interact and communicate in ways that undermine the functioning of democratic institutions and the meaning of democratic practices and values.”"
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Or, as has come up on this board before, we could just implement a voter qualification test. Some people are just too stupid to be reliably informed about legit issues, to recognize unfounded conspiracy theories  as such, or to reason intelligently about important issues. There are illiterate deplorables on the left and the right. They vote for anything they think is anti-immigration or anything they think is pro-immigration. They vote for sound bites, cartoons, and empty promises without regard to the effects on Democracy.
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An educated electorate is the greatest defense of Democracy.  
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The current primary process is terrible and needs to be changed. LP and Laffy made reasonable suggestions worthy of consideration.  
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To repeat, "An educated electorate is the greatest defense of Democracy."