#MSNBC talking about some voices in the Democratic party calling for a "mini-primary" before the convention, or at the convention.
There are no mechanisms for this.
The DNC would have to hold a vote to change the convention rules. Why would they do that? It would only introduce more chaos.
My guess is that #Biden will address the convention, release his delegates, and ask them to vote for #Harris.
I don't think the DNC leadership will tolerate any other nominees.
From #CNN: More minutiae on how the convention rules will play out and how other candidates would have to be nominated.
(People lecturing me about past conventions don't seem to realize that the rules change from convention to convention ...)
Among the highlights:
* Candidate must collect signatures from at least 300 delegates.
* Candidate must establish "substantial support for their nomination as the Democratic candidate."