The Democratic National Committee's 2008 Call Rules and Regulations written in 2007 pertaining to replacement of a Democratic Nominee are stated in Section G, pg. 19:
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.In a very Democrat Party fashion, but hardly democratic in nature, the leadership will decide who the replacement/s will be. Seems to me that finding any candidate the public has voted as the nominee to be ineligible would be a great boon for the leadership, a magnificent way to circumvent the will of the unwashed masses and install whomever they damned well please.
The life of Indigo Red is full of adventure. Tune in next time for the Further Adventures of Indigo Red.