Yep, an autumn election is now more likely than not, a no confidence vote would trigger one, which might be the only tool left for those against no deal/proroguing parliament. Whoever the new PM is will need to pass an initial HoC confidence vote, and even if that passes, another one can happen any time before the end of Oct. Assuming Johnson will win, he's already boxed himself into a corner saying we will definitely leave by 31st Oct. He can only do that in the time frame by going no deal, and at that point there'll be a no confidence vote. I think Johnson knows this and therefore is happy to say now that we'll leave by the 31st, in order to win members' votes, knowing that he can later say parliament stopped him from doing it. Brexiters are clueless when it comes to the complexities of Brexit, but very good at the more simplistic blame game. Dangerous game playing in dangerous times...