After visiting Queen Elizabeth II on Friday, a part of electoral procedure, May announced she would try to form a minority government supported by the Democratic Unionist Party, or DUP, from Northern Ireland. "If she has an ounce of self-respect, she will resign". But Johnson said he backed May.
The British PM was forced to relinquish her two closest aides - joint chiefs of staff Nick Timothy and Fiona Hill - as she struggled to reassert her authority.
'I can still be prime minister. "Absolutely", Corbyn told Sunday Mirror newspaper in an interview.
Downing Street said it hopes to finalize the deal next week, after Parliament resumes sitting.
But that gamble did not paid off, as concerns about social programs and security issues replaced Brexit as the main talking points in the United Kingdom. Now, Theresa May is seeking to form a government with the DUP - the only party who won enough seats to keep the Tories in power who haven't already rejected the idea of creating a coalition government with them.
Corbyn's long history of adopting a less reactionary position toward political violence from the corners of the British Empire, particularly Northern Ireland, should have given May an advantage after the attack - at least according to conventional wisdom.
On Twitter, Siegfried Muresan, spokesman for the European Parliament's largest grouping, the European People's Party, said, "EU did not want #Brexit, but has been prepared to negotiate it since a year ago".
The turmoil engulfing May has increased the chance that Britain will fall out of the European Union in 2019 without a deal. So don't expect negotiations to go Britain's way. But it will - brace yourself - mean yet another election.
The pound on Friday fell 1.7 percent against the US dollar and 1.4 percent against the euro.
Following last June's Brexit referendum, the process officially started in March when May served formal notice of Britain's intention to leave the EU.
The Conservatives built their election campaign around May's ostensible strengths as a "strong and stable" leader, and the outcome is a personal slap in the face. May's office said Saturday principles of an agreement had been reached, but the two sides later clarified that they are still talking.
With the Labour Party campaigning on policies such as ending university fees and boosting the police, the slide in the opinion polls for the Conservatives had begun. The result was a hung Parliament, with no party big enough to form an overall majority.
Britain's largely pro-Conservative press questioned whether May could remain in power. After three recounts, Labour took the wealthy London constituency of Kensington from the Conservatives by just 20 votes. Even if she stays, it'll be tougher for her to get things done.
May had repeatedly ruled out the need for a new election before changing her mind. Labour's increase in seats from 229 to 261 - with one seat still undecided - confounded expectations that his left-wing views made him electorally toxic. The party's opposition to abortion and same-sex marriage places it at odds with modernizing Conservatives. Less than a year after May was propelled into Downing Street following Britain's surprise referendum decision to leave the European Union, party insiders were placing bets on how long she could last.
The opposition party had been down in the dumps, with dismal polling and a general disdain for whether leader Jeremy Corbyn was "prime ministerial".
May seemed virtually certain to add to her party's strength, win a mandate in her own name (not just as a stand-in for her disgraced predecessor, David Cameron) and gain five years to negotiate a deal on exiting the European Union without facing a pesky national vote in the middle.