I think in terms of provisional ballots, the issue we have to keep in mind is...and I know it's something that exists in various jurisdictions and it's used for different purposes. In some jurisdictions it's used, for example, if there's no polling day registration. If you vote on polling day without being registered, then your ballot is treated as a provisional ballot. That makes sense for those jurisdictions that do not have polling day registration.
In our case, the issue seems to be more around voter identification, if I understand your question. I'm not quite sure how the provisional ballot would assist us in that context. A provisional ballot is a complex procedure. Voters who have a problem proving their address would have to come back at some point to the returning office. In rural areas, this may be some distance.