The following individuals made some kind of post in the Mock Parliment sub-board during the year 2015, but have not registered in the sign-up thread: Afleitch, NYMillennial, Retromike, Bacon King, Lumine, Jerryarkansas, Morgieb, Jack Enderman, Kalwejt, and Politicus.
While some of these people have switched full-time to AAD since then, some may still vote in this election. I would suggest simply grandfathering all of these individuals into the voter rolls, and requiring all future voters (after the conclusion of this election) to register in the sign-up thread.
For what is worth, despite initially posting I don't consider myself a part of the Mock Parliament nor do I have plans to participate in the near future. While my case may be very particular, I personally think taking all those early posts for granted as full voters is not necessarily a good idea if people took the trouble to open another thread for formal sign-up (and I believe that was made clear enough).