Don't count on it.
See my post in the other thread. I believe that the subparagraph you cited from COMAR doesn't apply, because two paragraphs before that it states that it doesn't apply to general elections, which this is.
Why would anybody risk not having their vote count? If you aren't registered, vote TODAY!!
When I voted in Bowie there were six plainly marked seats for "Provisional Ballots." And there were pretty well constantly used. Lotsa dead voting, it seems...