Some of these Europhile-leaning Brits have argued that the 2016 vote was unfairly influenced by dark money or Russian misinformation.
"The last thing our country needs right now is a Conservative Party leadership election".
What happens during a no-confidence vote? If she wins, no new leadership challenge can be called for a year.
There will be a leadership contest to decide her replacement. "In the national interest, she must go". The vote to determine the victor is then opened to the wider Conservative Party membership. "I have served it as an activist, councilor, MP, shadow minister, home secretary and now as prime minister".
Theresa May had been planning to discuss the Brexit negotiations with the taoiseach (Irish prime minister) on Wednesday night.
Theresa May has vowed to fight an effort to oust her as Conservative leader and Prime Minister "with everything I've got". "The victor of that contest would not immediately become prime minister and there could be heavy pressure to call a general election". "The prime minister must either govern or quit", he added. "So although she's often seen as rather an unimaginative politician and just really blundering her way through this Brexit morass, in the end, people quite respect the fact that she's still there and she's still standing".
Cabinet ministers and several high-profile members of the party have come forward to say they would back her tonight.
What does it mean for Brexit?
"In advance of the European Council I will go to see my counterparts in other member states and the leadership of the Council and the Commission", she said.
May is in Berlin for talks with Chancellor Angela Merkel and was attempting to meet the German leader when she came up against a pesky auto door and found herself desperately attempting to make an exit, much like her current Brexit negotiations with the EU.
Mrs May says any new Conservative leader would have to delay Brexit to renegotiate a deal with the EU.
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In a stark warning to Brexit-supporting opponents in her party, May said that if they toppled her then Brexit would have to be delayed and perhaps even stopped.
"A new leader wouldn't be in place by January 21 legal deadline, so a leadership election risks handing control of the Brexit negotiations to opposition MPs in Parliament", May said.
Some MPs are pushing for a Norway-style relationship with the European Union, much closer than the one proposed by Mrs May.
United Kingdom can let existing students also stay in United Kingdom and same from European Union for existing United Kingdom students in European Union but in the future there should be NO free education shortcut to European Union citizens in Scotland. This further infuriated MPs on all sides of Parliament, who accused the Prime Minister of holding the chamber in contempt by denying it a vote.
Graham Brady, the chairman of the party's so-called 1922 committee, said the threshold of 15 percent of the parliamentary Conservative Party seeking a confidence vote had been reached.
Why are they trying to get rid of her?
The British leader toured European capitals on Tuesday in an attempt to salvage the deal, after MPs savaged its provisions on the issue of the Irish border. It's necessary for Britain and it's necessary for Ireland.
A leadership election "would not change the fundamentals of the negotiation or the parliamentary arithmetic", she said.
Ms. May's Brexit plan has been thrown into turmoil after she was forced to defer a vote on the deal in the House of Commons on Monday because of mounting opposition.
Who could succeed Mrs May as Tory leader?
Former Foreign Secretary Boris Johnson and former Brexit Secretary Dominic Raab are the bookmakers' favorites for the top job if May loses the confidence vote. Two sources told BBC political editor Laura Kuenssberg the vote was being pulled.
The Conservatives have 315 MPs, so 48 would need to write such letters for a vote to be called.