13 Amendment of the Scottish Parliament (Elections etc.) Order 2015
After article 83 (vacancies: constituency seats) insert—

“83A Vacancies: regional member seats
1 Where it comes to the notice of the Presiding Officer of the Scottish Parliament that the seat of a regional member who was returned from a registered party’s regional list is vacant, the Presiding Officer must forthwith send a notice in accordance with paragraph (2) to the RRO for that region.
2 A notice under paragraph (1) must—
(a) state that a vacancy exists, and
(b) set out the name of the person who had been returned in the seat which is vacant, together with the name of the registered party on whose regional list that person’s name is included.
3 On receipt of a notice under paragraph (1), the RRO must ascertain the name of the person, if any, who is to fill the vacancy in accordance with section 10 of the 1998 Act (regional vacancies).
Section 10 was amended by S.I. 2010/2999.”

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