This section applies where the seat of a regional member is vacant.
If the regional member was returned as an individual candidate, or the vacancy is not filled in accordance with the following provisions, the seat shall remain vacant until the next general election.
If the regional member was returned (under section 8 or this section) from a registered political party's regional list, the regional returning officer shall notify the Presiding Officer of the name of the person who is to fill the vacancy.
The regional returning officer shall ascertain from that party's regional list the name and address of the person whose name appears highest on that list (" the first choice ") and shall take such steps as appear to him to be reasonable to contact the first choice to ask whether he will—
Where—
the regional returning officer shall repeat the procedure required by subsection (4) in respect of the person (if any) whose name appears next in that list (" the second choice ") or, where paragraph (a) or (b) of this subsection applies in respect of that person, in respect of the person (if any) whose name appears next highest after the second choice in that list; and the regional returning officer shall continue to repeat the procedure until the regional returning officer has notified the Presiding Officer of the name of the person who is to fill the vacancy or the names in the list are exhausted.
Where a person whose name appears on that list provides the statement and certificate referred to in subsection (4), the regional returning officer shall notify to the Presiding Officer the name of that person.
Where—
that statement and certificate shall have no effect unless and until the circumstances described in paragraph (a) or (b) of subsection (4A) apply in respect of the second choice or, as the case may be, of the subsequent choice.
Where a person's name has been notified under subsection (3), this Act shall apply as if he had been declared to be returned as a regional member for the region on the day on which notification of his name was received by the Presiding Officer.
For the purposes of this section, the date on which a vacancy is to be treated as occurring shall be determined under standing orders.