Even if they did all that, all the states would need reliable mailing lists. Oregon and Washington have been rigorously checking their lists precisely because of this problem, while other states don't need to do that if the onus is on the voter to show up at the correct poll.
It turns out that 17% of Nevada primary ballots had the wrong address.
If over 10% of votes are mailed to the wrong address, it would be a major crisis in a hotly contested election.
It turns out that 17% of Nevada primary ballots had the wrong address.
If over 10% of votes are mailed to the wrong address, it would be a major crisis in a hotly contested election.
[1]: https://publicinterestlegal.org/files/NV-2020-Primary-1P-1.p...