the ballots have a deadline to be printed.
if the deadline is not met, the ballots will be printed without the candidates name...
it is easy to have a candidate by the deadline... not the state’s fault if the party doesn’t have one.
I think Wisconsin is the problem for Biden, here is a summary. But now the Wisconsin Supreme court is controlled by liberals so they can probably just change the laws, how convenient.
https://www.wisconsinrightnow.com/joe-biden-replaced-wisconsin/