538. The qualified voters who are present on the premises where the register is open for registration at the time the register is scheduled to be closed and who have not been able to make the entries concerning them may nevertheless exercise their right to do so.
The person in charge of the register within the meaning of section 541 shall declare the period of registration closed after such persons have exercised their right.
For the purposes of the first paragraph, the premises where the register is open for registration extend as far as the end of the waiting line of qualified voters as it stands at the time the register is scheduled to close.