In the Government of Wales Act 2006, after section 111 insert—
(1)For the purposes of this Part a provision of a Bill relates to a protected subject-matter if it would modify, or confer power to modify, any of the matters listed in subsection (2) (but not if the provision is incidental to or consequential on another provision of the Bill).
(2)The matters are—
(a)the name of the Assembly,
(b)the persons entitled to vote as electors at an election for membership of the Assembly,
(c)the system by which members of the Assembly are returned,
(d)the specification or number of constituencies, regions or any equivalent electoral area,
(e)the number of members to be returned for each constituency, region or equivalent electoral area, and
(f)the number of persons who may hold the office of Welsh Minister appointed under section 48 or the office of Deputy Welsh Minister.
(3)The Presiding Officer must, after the last time when a Bill may be amended but before the decision whether to pass or reject it—
(a)decide whether or not, in the view of the Presiding Officer, any provision of the Bill relates to a protected subject-matter, and
(b)state that decision.
(4)If the Presiding Officer decides that any provision of the Bill relates to a protected subject-matter, the Bill is not passed unless the number of Assembly members voting in favour of it at the final stage is at least two-thirds of the total number of Assembly seats.
(1)The Counsel General or the Attorney General may refer the question whether any provision of a Bill relates to a protected subject-matter to the Supreme Court for decision.
(2)Subject to subsection (3), the Counsel General or the Attorney General may make a reference in relation to a Bill—
(a)at any time during the period of four weeks beginning with the rejection of the Bill, if the Presiding Officer has decided under section 111A(3) that a provision of the Bill relates to a protected subject-matter, or
(b)at any time during the period of four weeks beginning with the passing of the Bill, if the Presiding Officer has decided under section 111A(3) that no provision of the Bill relates to a protected subject-matter, unless the number of Assembly members voting in favour of the Bill at its passing is at least two-thirds of the total number of Assembly seats.
(3)No reference may be made in relation to a Bill—
(a)by the Counsel General if the Counsel General has notified the Presiding Officer that no reference is to be made in relation to it by the Counsel General, or
(b)by the Attorney General if the Attorney General has notified the Presiding Officer that no reference is to be made in relation to it by the Attorney General.
(4)But subsection (3) does not apply if the Bill has, since the notification, been approved or rejected in accordance with standing orders made by virtue of section 111(7).”