The Washington Post offers this report. See also this NY Times report. And if another primary is held, there’s the question of who pays and what is disclosed about who pays.
I’ve already expressed concerns about the administrability of a mail in vote. I wonder also about questions over preclearance (some counties in Florida are covered jurisdictions under section 5 of the Voting Rights Act) and about DNC approval (can’t those who oppose vote by mail block it there)?
My preference: either split the delegates 50-50 or hold an election with paper ballots marked by hand at the polling places and counted by hand by elections officials.