British Prime Minister Theresa May has promised to resign if her twice-defeated Brexit deal gets through parliament.
In a last throw of the dice to pull rebels in her party into line.
But it's not clear yet if that'll be enough for those who don't want her at the helm of the Brexit process any more.
Her hope is they'll be lured by both that promise - and their fears Brexit is sliding out of reach.
At stake is the treaty governing Britain's divorce from the EU, which May spent two and a half years negotiating with Brussels.
In January, parliament voted it down by the most crushing margin in modern British history... And another defeat this month was almost as bad.
May wants parliament to vote on it again this week.
She badly needs support from Brexiteers in her own party -- and some, even hardened opponents, have indicated they will now back her deal rather than jeopardise the divorce.
The price was her job.
Much will depend though on a small Northern Irish party, the DUP, which props up May's government and said no to her deal in the past two ballots.
Every vote counts for May, who heads a wobbly minority government.
She did have a slim parliamentary majority, but she lost it in another gamble in 2017, when she called a snap election to seek a wave of support to carry her through Brexit -- but she lost seats instead.
May's grip further slipped this week, when lawmakers voted to briefly take over the flailing Brexit process.
Holding a series of votes on Wednesday to try and find an alternative option.
Britain was supposed - before a delay agreed last week - to leave the EU on Friday.
But nearly three years after the Brexit referendum, parliament and the nation remain bitterly divided, with no obvious way forward.