Nadine Dorries has warned the Tories with Rishi Sunak in No10 they are heading into a "cold and brutal wasteland" in opposition.
The ex-Cabinet minister also claimed her party would "die" if former Prime Minister Boris Johnson does not return as leader.
It comes just days after the Tory MP - a staunch loyalist of Mr Johnson - accused Mr Sunak of dumping key Conservative policies of the past three years.
