Sources close to Ms Dorris – who was a prominent supporter of Liz Truss during the leadership election – said she believed the time was right for her to go. It is understood she was given the chance to continue in the cabinet but chose to return to the backbenches. Nadine Dorries was a staunch supporter of Boris Johnson (PA) She is now expected to be given a place on Mr Johnson’s resignation list, triggering a by-election in her Mid Bedfordshire constituency. Penny Mordaunt, the former international development secretary who was an early favorite in the Tory leadership race, is tipped to take the top job at the Department for Culture, Media and Sport (DCMS), according to reports. Ms Dorris did not intend her resignation to be seen as a blow to the incoming prime minister, a friend told the Mail. “Nadine has agonized over this as she supports Liz 100 per cent. But he has decided that now is the right time to leave the cabinet,” they said. Mrs Truss will begin announcing her cabinet on Tuesday after she was formally appointed prime minister by the Queen at Balmoral. Ms Dorris is believed to have been offered a role but turned it down (Reuters) She is expected to settle into her premiership in a reshuffle and already has some gaps to fill after the resignations of Priti Patel, the home secretary, and Nigel Adams, the cabinet minister. Ms Dorries’ departure from DCMS leaves many big cultural questions hanging for the new government. The outspoken Liverpudlian threw herself headlong into the so-called “culture wars”, attacking the BBC for alleged “groupthink” and social media platforms for alleged left-wing bias. The BBC’s long-term future remains in doubt, with the government’s review of the public broadcaster’s funding model being called into question following Mr Johnson’s resignation. Ms Dorris’ plan to privatize Channel 4 has not been finalised, and program makers have called on Ms Truss to reconsider the move. Liz Truss will field her top team on Tuesday (Reuters) In recent months, Ms. Dorris has emerged as Mr. Johnson’s staunchest supporter. He refused to agree with the number of ministers who resigned to force him to resign and days ago said he was the most successful prime minister in a generation. “He gets the big decisions absolutely right… I think we’re going to regret taking him out of our prime ministership,” he told BBC Newsnight. She was criticized by many of her colleagues as a vicious shooter in the early days of the Tory leadership race. A tweet in which he attacked Rishi Sunak for wearing expensive clothes and praised Ms Truss for her cheap earrings was seen as an example of the bitterness that marked the start of the six-week competition. A successful novelist who has sold more than 2.5 million copies, her departure from government is expected to allow her to return to writing books.