Biden won't be replaced.
- N C S W I C -
However, the DNC this year will be absolute chaos, with the Palestine protesters and the calls for a replacement. Regardless of the chaos, Biden will be the nominee.
The democrat party is fucked, they will have Biden as the nominee and the party will start to split.
"This will be the END of the D party."
The DNC can nominate whoever they want, but it will be a disaster in Nov.
Many states will oppose this move and protest in various ways. Replacement may not get on all the ballots. It could be significant.
Ballot presence aside, the change of candidate will cost votes, there is no way that a replacement candidate will get more votes than a viable original candidate.
Of course, a replacement might get more votes than a corpse, but the results will likely be lower enough results than a "normal" candidate would typically get that it is pointless to do.
They may just drag Joe across the line and go with plan "B" which is sabotage, traps, barriers and obstruction.