The Conservatives' losses were largely gains for the Labor opposition, which defied polls and predictions to gain 29 seats - a vindication for leader Jeremy Corbyn, whose grip on the party appears to have strengthened.
"I'm never going to give in arguing for what I believe is a pathway to a majority Labour government", he added.
"It will be hard to govern and it could mean another election later in the year", said Wyn Grant, professor of politics at the University of Warwick. The support obtained by Labor party members contrasted with the negative predictions of hardly two months ago, when they were 20 percentage points below the conservatives in terms of intention to vote.
Singer-songwriter Billy Bragg is another supporter.
Despite what is generally considered a humiliation, European Union President Donald Tusk took time to write May to congratulate her in the wake of the elections.
Andrew Gimson, contributing editor to the grassroots ConservativeHome website, said Mrs May had "lost the trust of the Tory party" and they would not want to fight another election under her.
De Villiers confident of leading South Africa in 2019 World Cup
This win took India's points tally to four points, while South Africa , with only two points from three matches, were eliminated. Sri Lanka play Pakistan on Monday, with the winners likely to meet England in Cardiff on Wednesday.
'My phone is full of texts from lots and lots of people from right across the party, ' he said.
The Conservatives remain the largest party in Britain, but now face the prospect of a hung parliament.
"The mandate she's got is lost Conservative seats, lost votes, lost support and lost confidence", he said.
It's an embarrassing turn for May who called the snap election three years earlier than required by law, convinced by opinion polls that seemed to place her in a strong position. Neither Conservatives nor Labour have seemed eager to form a coalition this time around, but their attitudes will likely change, as minority governments have a track record of not lasting long. The Conservatives "have lost their majority and the prime minister has lost all authority and credibility", said Scottish First Minister Nicola Sturgeon.
It would represent a remarkable turnaround in Labour and Jeremy Corbyn's fortunes and a spectacular decline in the popularity of Theresa May's Conservatives since the Prime Minister's decision to call the snap election. As one teaching student at the University of London told VOA, "I think most of us here were against Brexit previous year. And make way for a government that will be truly representative of all of the people of this country".
She told BBC Radio Wales: "We're still saying quite clearly that we would be ready to take over if Theresa May cannot cobble something together, and we're very doubtful that she can".
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