That's an interesting question. We already have that problem though, ever heard of humans? ;) Typically we deal with it by having a waiting period of 18 years

That's an interesting question. We already have that problem though, ever heard of humans? ;) Typically we deal with it by having a waiting period of 18 years from birth (balanced by death) or a green card to citizenship process that takes a while and is limited in number. On the other hand, would simulated humans even need much of a vote? I think their primary needs would be satisfied by simulated satisfaction. The only thing they they would need-need in the physical world would be for us humans to not pull the plug on them and to service their hardware when it fails. Much easier to deal with than real live humans. Just a few real humans might be needed to maintain entire cities of these people. It sounds like a great sci-fi story to grant a real-world franchise to a few elected officials in the sim-city and keep the truth hidden from the sim-citizens.