Theresa May should call a fresh general election if she can not get agreement on her Brexit plan, Jeremy Corbyn said.
Labour is keeping its options open over supporting another referendum if parliament can not make a decision on a Brexit deal, the party's deputy leader said.
"She talked about Corbyn, she talked about the alternative which is delivering the country to the sort of government that I don't think people have voted for and certainly any Conservative voter would be repelled by".
He said: "I would urge everybody within the Labour Party to listen to the voices that have come out in recent days and get to a position where we are supporting the full definition".
Lord Adonis said: "What I think should happen when we see her deal, given that it's going to be a betrayal of our economic national interest, jobs, people's livelihoods, people's incomes are going to be at stake, the right thing for us to do then is to have a people's vote".
"Here we are, two years since the referendum and the Government still hasn't produced a white paper on its own negotiating stance".
He said that Labour wanted to...
Arch-Brexiteer Jacob Rees-Mogg said he did not believe there would be a vote of confidence in Mrs May by Tory MPs, but called on her to change her Brexit stance as he attacked the Cabinet deal on European Union withdrawal hammered out at a summit at Chequers last week.
"Obviously electorally it might help my party but we want a good deal because families out there require Parliament to vote on a good deal".
The shadow Brexit secretary said Labour was not explicitly calling for a public vote on the final deal and respected the result of the 2016 referendum.
The Unite union, Labour's biggest financial backer, is also open to the possibility of a second referendum if the Brexit deal is unacceptable.