Despite the Prime Minister supposedly securing "legally binding" changes, the DUP has not openly confirmed its support for Mrs May's deal as of yet. That would give her a little more time for negotiation, but it also might spell the end of her office.
The House of Commons overwhelmingly rejected the deal in January, primarily because of concerns over arrangements for the Irish border.
There was speculation that May might pull the meaningful vote, and ask MPs to vote on a provisional deal that she could bring back to the European Union with the backing of parliament.
But Slack said the vote "will take place tomorrow".
This was reiterated by Irish Foreign Minister Simon Coveney, who told a press conference he "understands" Mrs May is travelling to the city later.
Ryanair after Brexit will treat shares held by non-EU shareholders as "restricted shares" including British share, thus meaning the share holders concerned will have no entitlement to vote, speak or attend any company meeting.
Environment secretary Michael Gove, a leading Brexiteer, appealed to rebel MPs to support May's deal in an article in the Daily Mail: "Forty-eight per cent of the country voted to remain".
Prime Minister Theresa May leaves 10 Downing Street to attend the weekly Prime Ministers Questions. That would mean "that we can move on" while leaving open the possibility to "potentially amend how we do this", she said. As a result, all focus will then be on a third vote, expected by Thursday, to decide if the Brexit deadline of March 29 should be delayed.
If May is forced to seek a Brexit delay this week, the European Union is preparing to impose punitive conditions, including a multi-billion pound increase in the 39 billion-pound divorce payment, the Telegraph reported on Sunday, without saying how it got the information.
Tory Brexiteers said rejection of the Withdrawal Agreement was "inevitable" unless the prime minister could secure significant changes to the Northern Ireland backstop.
"The situation is very fluid but the market is perceiving hard Brexit scenarios as increasingly unlikely", said Vassili Serebriakov, a macro strategist at UBS Securities LLC in NY.
May has used various arguments to persuade MPs to back her deal, warning both that defeating it risks a "no deal" Brexit, or that Britain may never leave the European Union at all.
Eurosceptics might be persuaded to vote for May's deal if they believe that Brexit may be cancelled altogether.
Hard-line Brexit supporters in May's Conservative Party said she should postpone Tuesday's vote rather than risk another crushing defeat.
He warned that UK MPs now needed to back the deal.
With a number of Labour MPs against a second vote, it remains unclear whether it would find a majority in Parliament.
Alan Wager, a Brexit expert at the U.K.in a Changing Europe think tank, said Parliament this week could decisively rule out both May's deal and a no-deal departure. She survived a bid to oust her through a no-confidence vote in December.
Delaying the meaningful vote would be another humiliation for the prime minister after senior ministers spent the weekend insisting it would go ahead as planned.