Address are written for humans.

For machines, the address line and postal code is the only important part, the rest is encoded in the postal code and can be left off.

There is no dropping out, and there’s no replacement. All political donations have been to the Biden campaign, it is illegal to transfer those funds to a new candidate. The only person who could run for president in his place is Kamala, since she is the other person on the ticket.

It’s extremely clear no one talking has any clue how any of this shit works.