They can do this by relying on non-traceable voting machines. Besides, if they get caught, their defense is that the votes are merely advisory. The party is a private organization and has no duty to run someone they don't want as a nominee.
Fraudulent promotion of Biden was apparent already a year ago.
In case you didn't know, Biden is an exceptional creep. That's a Twitter thread - click "Show this thread" to expand it. There's the story of his encounter with Tara Reade which goes firmly along the lines of "grab them by the pussy".
Biden is the face of status quo. He's a supporter of the Patriot Act and a champion of mass surveillance.
So the 2020 election is going to be Oligarchic Sex Predator vs. Autocratic Sex Predator. Fully corrupt on both ends.
This will alienate Democratic voters again. So Trump wins. And honestly, does it make a difference?
Edit May 23, 2020:However, if half the claims in this article are true, then Tara is a piece of work with real credibility issues:
Politico: Defense lawyers look to reopen cases where Tara Reade testified as an expert
This convinces me that Tara's claims are not to be taken at face value; especially considering how it recently turned out that the "anti-abortion" conversion of "Jane Roe" (from Roe v. Wade) was all an act paid by US anti-abortion fanatics. Perhaps this will convince enough people?
Edit March 14, 2021:
Wow, this post now reads much differently with a year's worth of information.
It's now clear that Trump was never a sex predator. However, Biden is. And not nearly as much as his son Hunter, who somehow slept with each of his brothers' wives, as well as his 14-year-old niece, and much more stuff on his laptop.
It's now clear that the US is run by a criminal elite, that the federal agencies work for this elite; that they do many investigations that are completely political, and never start others against allies they are protecting. The fact that they investigated Tara therefore now increases my trust in her claims. They would do this to harm her credibility.
But hey, the US is now fully run by criminals. Someone being a "sex predator" is a joke compared to where we are today.