Prime Minister Theresa May must convince her Conservative lawmakers on Monday that she should stay as party leader after an election gamble that has plunged British politics into chaos a week before formal talks to leave the European Union begin.
Unable to govern without support after the snap election, she has yet to secure the backing of a eurosceptic Northern Irish party with 10 parliamentary seats.
The outcome of last week's vote has also thrown into doubt what Britain would seek from Brexit talks with the EU, complex negotiations which will have profound implications for the world's fifth largest economy.
May will attend a meeting of the 1922 Committee of Conservative lawmakers on Monday, some of whom have called for her to be ousted.
However, despite anger from some at the shock result, May's position appears safe, at least for the immediate future.
"I don't detect any great appetite amongst my colleagues for presenting the public with a massive additional dose of uncertainty by getting involved in a self-indulgent Conservative Party internal election campaign," Graham Brady, the 1922 committee chairman, told BBC TV.