Note that, when taking votes from an erased user, since poll answers don't belong to poll voters, we were not migrating them in the `take_votes_from` method (and we aren't migrating them now either).
Note that, when taking votes from an erased user, since poll answers don't belong to poll voters, we were not migrating them in the `take_votes_from` method (and we aren't migrating them now either).