John Bercow, the Speaker of the House of Commons, has said it is “blindingly obvious” that the new Conservative prime minister will not be able to suspend parliament to push through a no-deal Brexit.

The Speaker said it would not be an option after outrage across the political spectrum when the leadership hopeful Dominic Raab suggested he might try to take that path.

“That is simply not going to happen. It is just so blindingly obvious that it almost doesn’t need to be stated, but apparently, it does and therefore I have done,” he told MPs.

Matt Hancock, another Tory leadership contender, called for all his rivals to rule out the possibility of ending the parliamentary session to stop MPs from voting on whether there should be a no-deal Brexit.

He said it undermined parliamentary democracy and risked a general election.

Rory Stewart, another contender, called the suggestion “unconstitutional” and “undemocratic”, adding: “It wouldn’t work.”

Andrea Leadsom and Boris Johnson are also among those who have said they would not pursue such an option in order to take the UK out of the EU without a deal on 31 October.

Amid suggestions it could even be unconstitutional, Valerie Vaz, the shadow leader of the Commons, asked the government for clarity on whether prorogation to avoid a decision from parliament would be allowed.

In response, Mel Stride, the leader of the Commons, said prorogation was “ultimately in the gift of the Queen”, adding: “What I would say is, that I do think Her Majesty should be kept out of the politics of our parliament.

“I’m sure that will be a matter that will be at the forefront of those who toy with those decisions in the future.”

Several senior Tories spoke out against the idea, including Amber Rudd, the work and pensions secretary, who said: “I think it’s outrageous to consider proroguing parliament. We are not Stuart kings.”

Pete Wishart, an Scottish National party MP, called the proposal a “subversion of democracy”.