That is the extraordinary question being asked by many at Westminster, even as the prime minister who signed the thrice-rejected agreement packs her bags to move out of Downing Street.
Two events threaten to breathe new life into the divorce deal, one in each of the two main parties, and both fuelled by the inability of politicians to agree another route out of the crisis.
Finally, 26 of them have put their name to a “Brexit must happen” letter, demanding, significantly, that Labour “back a deal by 31 October”.
Now, everyone knows (well, everyone except the Tory leadership candidates) that the EU will not renegotiate the deal, so the only one Labour could back is the existing one.
“Many of the 26 names on the list would vote for the deal if it is brought back – and almost all of the them would if it is a free vote,” one of the Labour MPs told me, adding that “there are another 20 out there”.
The twist is the growing belief, both at home and in Brussels, that the heir apparent does not mean it, that he will flunk it when faced with the true horrors of no deal.
“Which of these potential prime ministers is most likely to persuade the Conservative Party to vote for a repackaged version of the existing deal? The one with the greatest credibility with hard Brexiteers,” the paper argued.
So, prime minister Johnson “wins” some inconsequential “concession” from Brussels and deploys his anti-EU street cred to persuade enough Tory colleagues to – in combination with Labour rebels – win a majority for the dead deal?
It still seems unthinkable – but it is no longer being ruled out.