Theresa May has warned Conservative MPs that they risk leaving the UK in ‘uncharted waters’ if they reject her deal on Tuesday.
The Prime Minister added that they risked handing Jeremy Corbyn the keys to Number 10 unless they back her Brexit deal.
With a looming Commons vote, May is fighting to save both her Brexit plan and her premiership in the face of a mounting revolt from within her party.
Downing Street insisted that the vote would still go ahead on Tuesday amid speculation she might be forced to delay the showdown.
'Real risk of no Brexit'
May warned Tory would-be rebels the country would be in "uncharted waters" if the deal is rejected.
"It would mean grave uncertainty for the nation with a very real risk of no Brexit or leaving the European Union with no deal," she told the Mail on Sunday.
"We have a leader of the Opposition who thinks of nothing but attempting to bring about a general election, no matter what the cost to the country.
"As someone who cares passionately about my country and my party, I believe Jeremy Corbyn getting his hands on power is a risk we cannot afford to take."
Reports suggested May could make an emergency trip to Brussels ahead of a planned summit on Thursday in an effort to secure further concessions in an effort to win over critics of her plan.
The Prime Minister's comments came as her Government was hit by another resignation over the Brexit plan.
Will Quince, a ministerial aide to Defence Secretary Gavin Williamson, hit out at the backstop plan to avoid a hard border with Ireland, saying it could result in the UK being "tied to the negotiating table for years, until we agree to anything in desperation" to get out of the situation.