Speaking in Downing Street Mrs May told reporters: 'This has been a long and challenging day, but at the end of it I'm pleased to have received the backing of my colleagues in tonight's ballot.
Brexit was the only issue on the table and May has promised to continue to seek "legally binding" assurances about the Irish backstop from the EU. Foster, whose 10 MPs prop up the minority Tory administration, said she told the May "we were not seeking assurances or promises, we wanted fundamental legal text changes". But they fear political fallout if they come out so strongly against Brexit-which a majority of the British people supported in the national referendum two years ago.
"I don't think it will get through, I'm not even sure if the cabinet will agree for it to be put to the House of Commons".
Now, under party rules, disgruntled Tories can't trigger a new leadership contest for another 12 months.
The Northern Irish party that props up her government - and strongly opposes her withdrawal deal - said the fundamental arithmetic in parliament was unchanged despite the confidence vote victory, and the backstop must go. If her deal is rejected by the Commons and Labour fails to force a general election by passing a no-confidence motion in the Government, MPs may try to impose a second referendum via a vote in Parliament.
"While I'm grateful for that support, a significant number of colleagues did cast a vote against me, and I have listened to what they said".
"A Prime Minister is a person who can get business through parliament".
Should Mrs May lose the meaningful vote on her Brexit deal, Labour's position is that it wants a general election.
When the Conservative party held the last convention in Birmingham, there was a lot of talk about the leadership challenge as the division between the hardline Brexiteers and the rest of the Conservative party loyal to the party leader and the Prime Minister Theresa May was obvious.
The chairman of the European Research Group of Tory eurosceptics told the BBC: "It's a bad result for the Prime Minister".
Theresa May saw the Brexit agreement vote that was originally scheduled for December 11 as a political realist, therefore she chose to scrap it, as it was going to war with no armor.
And in order to survive, the prime minister had to give up the possibility of taking her party into the next election. The leadership challenge marked a violent eruption of the Conservative Party's decades-long divide over Europe and threw Britain's already rocky path out of the European Union, which it is due to leave on March 29, into further chaos.
"The result of the ballot held this evening is that the parliamentary party does have Conservative Party does have confidence in Theresa May as leader of the Conservative Party", announced Graham Brady, the Chairman of the Conservative Party's 1922 Committee.
For the British Pound what the European Union offers is important: if markets believe they have made a strong, concerted gesture the feeling amongst traders will be more Conservative party rebels, and even cross-bench opponents, will get behind Theresa May and her deal. She's like a video game character who got an invulnerability power up just when she needed to face her most implacable enemy. This house agreed when the vote was going to take place.
Afterwards, Brexiteer Tory MP Jacob Rees-Mogg said the result was "terrible" for the Prime Minister, and that she should nevertheless resign.
And this comes after May had said this was the "only deal" and said it could not be changed.