Britain's Labour Party leader Jeremy Corbyn challenged whoever becomes the country's new prime minister to test their Brexit plan with a second referendum on European Union membership, saying his opposition party would campaign to remain.
The two finalists, Boris Johnson and Jeremy Hunt, both used their only televised debate to argue that they were best placed to negotiate Britain's twice-postponed exit, now scheduled for October 31. The victor of the contest is due to take office later this month, and will have barely more than three months to win support for a Brexit deal before Britain's scheduled October 31 departure date.
He added: "In those circumstances, I want to make it clear that Labour would campaign for remain against either no deal or a Tory deal that does not protect the economy and jobs". This included some of the party's biggest affiliated unions.
However, his statement stopped short of calling for a second referendum in all cases.
With Labour under intense pressure from more overtly pro-Remain parties, including the Liberal Democrats, the party had already shifted since the European elections towards urging the Conservatives to put their deal to a public vote.
Mr. Corbyn's letter clarifies the party's position - up to a point.
"But it is clear it is still his intention to negotiate a damaging Brexit deal if he gets the keys to Number 10".
The move has been seen as a further step by Labour to becoming a Remain party.
Simon Johnson, CEO of Jewish Leadership Council, said: "We do not support this booklet in any way as it was not produced in partnership or consultation with the mainstream Jewish community or any expert in antisemitism".
Labour will now back remaining in the European Union over leaving without a deal or supporting a Conservative-brokered deal.
John Mann, the MP for Bassetlaw, said there was no sign that voters in the party's traditional heartlands in the North and Midlands who backed Leave in the referendum, had changed their minds.
"I have made it clear that if I am he next prime minister our ambassador in Washington stays", Hunt said.
Pollsters make Johnson, a former mayor of London, the strong favourite in the leadership race.
Hunt has expressed frustration at the reluctance of Johnson to take part in debates.
Most businesses and economists think a no-deal Brexit would plunge Britain into recession as customs checks take effect at U.K. ports and tariffs are imposed on trade between the United Kingdom and the EU.
The unions agreed on Monday that in a choice between a Conservative deal or a no deal and remaining in the EU, they believed Labour should campaign to remain, the text of the agreement shows.
Trump also renewed criticism of May's handling of Brexit.
Meanwhile in an email to Labour general secretary Jennie Formby sent last week, Mike Katz from JLM refused to engage with the party on the document. He said: "We will decide very quickly at the start of that campaign exactly what our position will be".