@zonz @RichardJohnson @SAUNDERS Yeah but there's different rules for campaigns. You should be able to change the VP pick up until each state's deadline for getting on the ballot. This is also a safety mechanism of the Electoral College. If a ticket wins an election, then the VP drops out, the "winning" Presidential candidate doesn't just get to pick whoever he wants. The EC has to vote for them, though if the electors are loyal enough to a candidate they might just ram through whoever they want.