With a simple message similar to the soundbites he used in the 2016 referendum campaign, Johnson, who unlike other politicians is better known by his first name, has managed to persuade much of his party that only he can rescue it from electoral disaster by delivering Brexit.
He won the support of one of earlier candidates, pro-Brexit lawmaker and former Brexit minister Dominic Raab, who said Johnson would take Britain out of the EU by the end of October.
"The only candidate who will now do this is Boris Johnson and so I'll be supporting him to become our next Prime Minister," he told the Evening Standard newspaper.