MPs are returning to Westminster after an 11-day Easter break with Brexit still deadlocked and Theresa May facing a double threat to her leadership.
Senior government ministers are resuming their talks with leading Labour figures in a bid to reach a deal, but the two sides remain a long way from a breakthrough.
And the prime minister is facing two new moves to accelerate her removal from Downing Street, from senior Conservative MPs and from pro-Brexit party activists.
The 18 Tory MPs who make up the executive of the backbench 1922 Committee are holding an emergency meeting to discuss calls to change party rules to allow another leadership vote.
And 70 Tory associations are demanding an extraordinary meeting of the party’s National Conservative Convention in a separate bid to force another vote of confidence in Mrs May.
The MPs and the activists attempting to force her out both want the party to scrap the rule which prevents a second confidence vote within a year of the one she survived last December.
And despite the PM’s hope that the Easter break would calm the frenzied mood of Conservative MPs, the latest Brexit delay – until 31 October – appears to have hardened the mood against her.
On the day the Commons broke up for Easter, Mrs May told MPs: Let us use the opportunity of the recess to reflect on the decisions that will have to be made swiftly on our return after Easter.
But one member of the 1922 executive has told Sky News: She told us to go away and reflect. Well, I’ve reflected and my view is that she has to go now. This cannot go on.
Those MPs on the executive who want the PM out want her to quit before 30 June and are urging 1922 Committee chairman Sir Graham Brady to tell her she must step down without delay.
A senior backbencher told Sky News: Trust in the Prime Minister is completely broken. Nobody believes she won’t kick the can further down the road and try to stay on longer.
Many Tory MPs fear disastrous results for their party in the local government elections on 2 May and in elections for the European Parliament – if they go ahead – three weeks later on 23 May.
Some Tory activists claim they are on strike and refusing to campaign for the local elections and opinion polls are suggesting a surge in support for Nigel Farage’s new Brexit Party in the Euros.
An extraordinary meeting of the Tories’ National Conservative Convention is being demanded in a petition, organised by Dinah Glover, chairwoman of London East Area Conservatives.
The petition says local Tory chairmen and women no longer feel that Mrs May is the right person to continue as Prime Minister to lead us forward in the negotiations.
It adds: We therefore with great reluctance ask that she considers her position and resigns, to allow the Conservative Party to choose another leader and the country to move forward and negotiate our exit from the EU.
Ms Glover told The Daily Telegraph: I am extremely sad that we have had to organise this petition to ask Mrs May to consider her position. But it has become increasingly obvious over the last year that she has become the block to Brexit rather the solution.
Chairmen have signed the petition because they fear Brexit will not be delivered under her leadership.
We need a Prime Minister who believes in the benefits that Brexit can bring to our country to lead us in the negotiations and out of the EU.
That is the only solution which can satisfy our party and the British people. Enough is enough.
The talks between ministers and Labour frontbenchers, which have been going on for some weeks but have so far not produced any indications of a willingness to compromise on either side, are resuming in the Cabinet Office.
Cabinet Office minister David Lidington, Brexit Secretary Steve Barclay, Chief Whip Julian Smith and the PM’s Chief of Staff Gavin Barwell will meet a Labour team led by Shadow Brexit Secretary Sir Keir Starmer.