63.—(1) A person who at a lawful public meeting to which this article applies acts, or incites others to act, in a disorderly manner for the purpose of preventing the transaction of the business for which the meeting was called together shall be guilty of an illegal practice.
(2) This article applies to a political meeting held–
(a)in relation to an election for return of a constituency member, in that constituency; and
(b)in relation to an election for return of regional members, in that region,
during the period beginning with the last day on which notice of election may be published in accordance with the Scottish Parliamentary Election Rules and ending with the day of election.
(3) If a constable reasonably suspects any person of committing an offence under paragraph (1) above, he may if requested so to do by the chairman of the meeting require that person to declare to him immediately his name and address and, if that person refuses or fails so to declare his name and address, or gives a false name and address, he shall be liable on summary conviction to a fine not exceeding level 1 on the standard scale.