Boris Johnson is ahead in polls of grassroots Conservatives.
She's also brandishing her credentials because she's still not assured of that job remember, and there's still an bad lot to play for, so she's really just trying to play up her credentials in terms of defending the Brexit deal that Barnier supposedly negotiated, and which has led to the downfall of our existing Prime Minister.
"If you want to leave the European Union quickly, if you want to avoid a general election, which is the risk if you go about this in the wrong way, I'm the person who has the biggest chance of negotiating that deal and getting us out by 31 October".
"As we know, it isn't as straight forward as we would like it to be because the Prime Minister has tried on several occasions to do that", she added.More news: Karnataka political crisis | Trinamool organises Opposition protest in Parliament
The HuffPost website and i newspaper reported that the chancellor has told colleagues that Speaker John Bercow, opposition MPs and Tory rebels might insist on continuing to debate in the chamber even if Johnson asks the Queen to suspend sittings by a mechanism known as prorogation.
She said if the future relationship had been negotiated alongside there would not have been the same issue with the backstop.
Johnson still has critics from within his own Conservative Party, with former prime minister Sir John Major saying in an interview he would support legal action to prevent Johnson shutting down the House of Commons.
"I'm friendly with him, as you well know, but equally I do know many other members of the administration and we do share a hell of a lot in terms of our political philosophy - but, right at this moment in time, whilst a new trade deal with America is an important component of [Brexit], what I can't allow to happen [is] I can't allow Boris Johnson to do to the British people what Theresa May did", he explained.
"I think, somehow, Alex, much as I love the USA, much as it would be a dream job for me in many ways, I'm afraid I've got to stick around in case they drop the ball again". They also disagree on climate change, something the remain backing parties think is easier to deal with inside the EU.More news: Somali-Canadian journalist Hodan Naleyeh dies in Somalia extremist attack
"A no-deal Brexit would be enormously damaging and I will do everything I can to persuade my colleagues to avoid that and get a good deal".
"They are based on the evidence that men and women up and down this country running businesses, working in businesses, have made it crystal clear to me what that means and I will always represent them", he said. "That's one of the reasons she has worked incredibly hard to enable the United Kingdom to leave with a deal".
May said she also regrets her refusal to take part in televised debates before a disastrous snap election in June 2017.
The pair were each to be interviewed for half an hour in a programme to be aired on Friday night.More news: Would you let an Amazon robot into your house?