Highly Recommended Read Re The Sanders Candidacy
But before we get to that ...
Emerald Robinson 
@EmeraldRobinson
Lots of liberals are stunned that a communist like Bernie Sanders is now the Democrat front runner.
Really? For the last 30 years, our colleges taught kids cultural Marxism & relativism & identity politics.
Who hired these radicals to teach in our schools?
Liberals did.
That's right. The Left deliberately dumbed down the kids. Now they're reaping the whirlwind--the dumbed down kids are now old enough to vote, and they're really stupid.
But here's that really good article--and you'll quickly see how it fits in with Emerald Robinson's tweet:
No amount of “quality control” will save establishment Democrats.
The author, Chris Barron, goes through a detailed analysis of what's going on, then concludes:
Four years ago, Sanders’ policy positions may have been considered far outside even the Democratic party mainstream. But today there is absolutely no daylight between him and Elizabeth Warren— even the Democratic “centrists” have lurched far to the left. Why should Democratic voters have to settle for the imitation (Warren) or Bernie-lite (Biden, Buttigieg, and Bloomberg), when they can have the real thing?
Sanders has the money, the motivated base, and a message that resonates with the Democratic rank and file. And just like with Trump in 2016, a handful of washed-up Democratic establishment hacks like Hillary Clinton and her cronies will refuse to endorse Bernie. But they won’t be able to stop him. Heck, I don’t even think Barack Obama could stop Bernie right now.
Some believe that Democratic superdelegates will save them from Bernie. There are almost 800 super delegates who cannot vote on the first ballot. If no nominee is chosen on the first ballot, however, super delegates will be free to vote on subsequent ballots. As much as the idea of a contested convention is a dream for the media and political nerds, the truth is that if Bernie comes into the convention with the most delegates, it would be absolute electoral suicide for the Democratic Party to deny him the nomination. While I expect there will be an effort at the convention to stop Sanders—in the same way that there was an effort in Cleveland in 2016 to stop Trump—no political party is going to light itself on fire and refuse to bend to the will of its base.
No one can save Democrats from themselves. Bernie Sanders is going to be the nominee.