In a crowded race to replace May, Brexit has become the touchstone policy for the contenders, with Johnson, who led the campaign to leave the EU almost three years ago, taking a tough stance to exit at the end of October, with or without a deal.
The former foreign secretary and ex-London mayor has won over many in his party by arguing only he can rescue the Conservatives, who have been punished in recent elections over an inability to deliver Brexit on time.
And for many, the contest for prime minister is his to lose – he has the most declared Conservative supporters in parliament and is widely popular among those who will ultimately choose May’s successor.
As in the 2016 referendum on EU membership, Johnson’s message is clear – any more Brexit delays and the Conservative Party risks opening the door to Labour leader and veteran socialist Jeremy Corbyn.
“After three years and two missed deadlines, we must leave the EU on October 31,” he will say, according to extracts from a speech scheduled for Wednesday.
“We simply will not get a result if we give the slightest hint we want to go on kicking the can down the road with yet more delay. Delay means defeat. Delay means Corbyn. Kick the can and we kick the bucket.”
Almost three years since voting to leave the EU, Britain is no clearer on how, when or even whether Brexit will happen.
Parliament has rejected the divorce deal negotiated with the EU three times and there is little agreement among MPs.
Johnson hopes to win support by promising to leave on October 31 deal or no deal – a pitch that might win him support in his leadership bid but one which also worries pro-EU MPs who want to stop any future government leaving without a deal.
He has been criticised for hiding “in a bunker” by some but the strategy to reduce the media exposure of a man who has been prone to gaffes and scandals seems to be working, with his support so far holding.
For many in the Conservatives, he is seen as one of a few prime ministerial hopefuls who could lead the party to another election victory after nine years in power.
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