[Lazamataz]

Wrong address = invalid vote. So if I move down the street my vote's no longer valid?

Yes. Keep your damned address current.

[semimojo]

Yes. Keep your damned address current.

In what universe do people update their voter registration address when they move in state?

In this one we leave it up to the USPS and the NCOA file.

Having moved is no problem if you're still in state.