The pro-Remain health minister was joined in criticising the vote by Alun Davies, Blaeanu Gwent AM, who said: "I suspect that in the last hour UK Labour has lost the next general election".
Leftist Corbyn, an instinctive critic of the European Union, has been under renewed pressure from party members and even some of his top team to unequivocally back remaining in the European Union and their rebellion forced a vote between two options on Monday.
Polls show these views have become even more entrenched today - a polarisation that further complicates Corbyn's bid to find a unifying stance.
Since he took charge of the party in 2015, Labour has been beset by antisemitism scandals that have seen multiple members and officials suspended or expelled, and prompted an investigation by the country's Equality and Human Rights Commission.
"We will be campaigning in a general election to say that things have moved on so much with Boris Johnson very relaxed about a no deal Brexit that we're going to let the people decide".
"He is determined to negotiate a Brexit deal if Labour win an election, despite all the evidence that there is no Brexit deal that is good for our economy, our NHS and our security". He has said that he would not campaign for either position.
"The British people will make that final decision", Corbyn told ITV.
"How can they go into a general election sitting on the fence on the most important issue of our time?"
The row over Watson has prompted suggestions that Corbyn's supporters feared a possible succession could reduce the left's control over the party. No opposition leader has fared worse in more than 40 years.
"The Liberal Democrats are the only main party going into the next election promising to end the Brexit chaos".
"I know that the scottish Labour Party agreed with me, and I know that the Welsh Labour Party agree with me". The Lib Dems would take 19 per cent of the 2017 Labour vote, with 7.4 per cent going to the Greens, 3.5 per cent to the SNP, and 0.7 per cent to Plaid Cymru.
The EHRC's inquiry is meant to find whether Labour "unlawfully discriminated against, harassed, or victimized people because they are Jewish".
A day after Jon Lansman failed to remove Tom Watson from his position, the Deputy Leader of the Labour Party has called the head of Momentum "out of his depth".
In a major YouGov poll commissioned by Ian Austin MP, who left the Labour Party and denounced its lurch to the far left after a series of antisemitism scandals - for which the party is now under investigation - Labour members were asked their view on a range of views on issues from abolishing the monarchy to nuclear disarmament.
More than three years after Britain voted to leave the European Union, both parties are still deeply divided, leaving parliament deadlocked and heightening uncertainty over when, how and even whether Brexit will happen.
Some of the proposals that could come up for a vote at the conference include a plan to give 10 percent of United Kingdom companies' shares to workers over the next 10 years.
Ally Jon Lansman, whose leftist Momentum movement was created to support Corbyn, urged Labour members "to vote with their conscience", and the country's biggest union, Unison, was planning to back the "remain" stance because it was anxious ambiguity could hurt the party's election chances.
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