People who joined Labour after February this year will not be allowed to vote in the party's leadership contest, the National Executive Committee (NEC) has ruled.
The freeze date for party members eligible to vote was agreed by the NEC as six months. It means people who signed up recently have been frozen out.
The committee also has agreed that Register Supporters who signed up for the last Labour leadership election will have to sign up again and pay £25 to vote.
They have a 48-hour period from Thursday to Saturday to join and pay the one-off £25 to vote in the contest.
"The NEC meeting has concluded. The timetable for the contest for the Leader of the Labour Party has been agreed by the NEC and will commence on Thursday. The timetable will be published then."
The shadow chancellor earned loud cheers as he launched an foul-mouthed attack on the MPs seeking to replace his friend Corbyn.
The MP for Pontypridd resigned as shadow work and pensions secretary last month in protest at Jeremy Corbyn's leadership.
I now realise that my earlier description of the NEC meeting - as an omni-shambles - was generous.