The Tory deal with the DUP is still on, Theresa May's deputy has insisted, despite the hardline
The £ 1 billion agreement saw the DUP promised the government up in key votes.
But they failed to back the government in a string of key Budget in protest against her Brexit deal.
But Cabinet Office Minister David Lidington, effectively Mrs May's deputy, insists the deal is still on.
He made the comments while visiting the Prime Minister's Brexit deal, adding that he had received assurances from a member of the Democratic Unionists within the last 24 hours.
DUP leader Arlene Foster has said a Commons amendment supported by backbench Tories giving Parliament to say on invoking the Irish border backstop does not go too far, adding that domestic "tinkering" to the government .
Mr Lidington said: "The DUP have made it clear.
"As with any minority, there are going to be squalls and difficulties in the House, but that is not something new to British history."
Withdrawal The parliamentary arithmetic is against the government ahead of the next week's withdrawal treaty vote.
Following an amendment, Parliament would decide whether to trigger the backstop or extend the transition period beyond December 2020.
Mr Lidington said Members of Parliament have a public duty to act in the national interest.
"The choices are not going to go away as a result of postponing the vote.
"The European Commission, the President of France, the Chancellor of Germany, other leaders, have all said, very plainly, this is the deal that is available.
"They on the EU side have made concessions to get here, both sides have moved.
"And Michel Barnier, the EU's negotiator, has had a lot of flak from Governments in Paris, the Hague and other capitals, and so on.
"So they are not going to move, I know the choice becomes if not this deal, what else?
"I do not think I'm going to crash," he says, "I'm going to crash," he says, "I'm going to crash," "I'm going to leave two years ago."
He said the challenges of the coalition government were not new.
David Cameron and Nick Clegg: "We had it in the Seventies, you have a great many European democracies; as a matter of routine you have minority governments and you just have to work through, look for compromises, have discussions. I am very confident that we will continue. "
Mr Lidington visited the premises of Core Systems, which makes technology for use in prisons.
The Federation of Small Businesses hosted a roundtable discussion about skills, trade and export.