There are deadlines in several States for candidates to be put on the ballot. In fact the DNC convention was scheduled so late that it would miss several of those deadlines, which IIRC was the reason they were going to hold a virtual convention August 6th to officially nominate their candidate.
> There are deadlines in several States for candidates to be put on the ballot.<
There are also many states that have a deadline for candidates to register with the state. That deadline has passed for all of them.
There are only two other dems who have registered, Dean Phillips and Jason Palmer.
EC