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Patrick Maguire is the New Statesman's political correspondent.
Beyond Remain and Boris Johnson's deal, Arlene Foster's party has ruled nothing out - including a customs union.
The passage of the Letwin Amendment gives Arlene Foster's 10 MPs a golden opportunity to destablise the prime minister's fragile parliamentary coalition.
The prime minister and his spokespeople insist he will abide by the Benn Act, but have no plans to say how he will avoid an extension.
Not if Oliver Letwin's amendment to the meaningful vote motion passes.
Momentum's Jon Lansman has warned would-be rebels that they will be barred from standing in the next election.
The former minister, who was suspended for shoving a climate protester, is the latest Remainer to step aside.
The party has only ever split twice on Brexit votes - and even then it didn't mean to.
No. But Boris Johnson needs Labour MPs to believe it has.
Hardline Eurosceptics will make their judgement on the legal text of a deal - rather than Arlene Foster's reaction to it.
The Labour peer is not among the seven-strong list of prospective candidates to replace the retiring Kate Hoey.
