[ClearCase_guy]

As far as I know, there is no established protocol for a last minute replacement.

Can they change the names on the ballots in 50 states at this point?
If Tim Kaine is the designated vice-president for the Dems, can they skip over him and choose someone else?
If Bernie Sanders came in second in the primaries, can they skip over him and choose someone else?

I’ve heard people talk about Biden.
I’ve heard people talk about Michelle.

Would they make a mockery of the entire Dem primary system?

[Publius]

Yes there is. Read this.

[Theodore R.]

Thomas F. Eagleton being replaced in 1972 by the popular R. Sargent Shriver comes to mind. The DNC can change nominees.

[Enterprise]

"Can they change the names on the ballots in 50 states at this point?"

Early voting has begun, and - assumedly - those who voted for Hillary can not go back and vote for someone else. What a shame.

[thinden]

Well. They could put mitt on top of their ticket.

After all he’s been campaigning harder against trump than anybody.

[M-cubed]

Can they change the names on the ballots in 50 states at this point?<<

No!..but the can change the voting machines so that Mickey Mouse could win as a write in candidate...