IX. Procedural Rules of the 2020 Democratic National Convention
G. Filling a Vacancy on the National Ticket: In the event of death, resignation or disability of a nominee of the Party for President or Vice President after the adjournment of the National Convention, the National Chairperson of the Democratic National Committee shall confer with the Democratic leadership of the United States Congress and the Democratic Governors Association and shall report to the Democratic National Committee, which is authorized to fill the vacancy or vacancies.
Last minute October surprise will be a new rat candidate
The latest deadline shows to be 9/4/2020. Would the Dems be allowed to replace slow Joe after that date? Of course they would! Would Repubs be allowed to in the same situation? Probably not in Dem states!