If no party wins a majority by itself, it can try and form a government in one of two ways. "All over the world, people are rising up against austerity and massive levels of income and wealth inequality". May said outside Downing Street after returning from Buckingham Palace, where she received the Queen's permission to form a government, though the Conservatives lost at least 12 seats. She vowed to take the country out of the EU's single market and customs union, essentially a free-trade zone, radically changing Britain's relationship with one of its biggest trading partners. Several Conservative lawmakers, including Scottish Conservative leader Ruth Davidson, raised concerns over the DUP's opposition to same-sex marriage.
Despite calls to step down, including from Corbyn, whose party gained more votes than expected, May appeared determined to form a government with Northern Ireland's right-wing Democratic Unionist Party, which won 10 seats.
The result, as the general election showed, is a muddle.
Confident of securing a sweeping victory, May had called the snap election to strengthen her hand in the European Union divorce talks.
Her government has already triggered Article 50 of the EU Lisbon treaty which could see Britain formally leave the EU by March 30, 2019.
Britain's best-selling Sun newspaper said senior members of the party had vowed to get rid of May, but would wait at least six months because they were anxious that a leadership contest could propel Labour leader Jeremy Corbyn into power.
Her opponents also took issue with her refusal to take part in a televised debate with other party leaders. There's a possibility of voting it down it and we're going to push that all the way.
Niblett said: "Having made Brexit the rationale for the election, she nevertheless made no effort during the campaign to explain how she would manage the negotiation or what a successful deal would look like". "I'm afraid we ran a pretty terrible campaign", she said.
"It is quite possible there will be an election later this year or early next year and that might be a good thing because we can not go on with a period of great instability", Corbyn told the BBC. Now, she has no strong majority to back her policies through Parliament. And Liberal Democrat leader Tim Farron pledged during the election not to go into coalition with either the Tories or Labour. "The rebellion against her is just getting started".
The objective of calling elections, having assured that there would be no election before the schedule one in 2020, after she took over as the party leader past year, Theresa May had hoped to strengthen her party's grip on power to be able to successfully negotiate Britain's exit from the EU.
Most opinion polls and the bookmakers had been forecasting a strong majority for the ruling Tory party of between 50 and 70 MPs.