Johnson could be his own worst enemypublished at 14:55 British Summer Time 13 June 2019
Iain Watson
Political correspondent
So is the Boris Johnson bandwagon unstoppable?
It's worth remembering that the leading candidate at the same stage in the Conservative leadership contest in 2005 was David Davis, who went on to lose.
And in 2001, it was Michael Portillo, who then failed to make the final two.
So, opponents of Mr Johnson could still gang up and do him in.
But as one canny Conservative observer put it, "backing Boris is the ambitious thing to do".
With Mr Johnson so far in front, MPs who want to climb the ministerial ladder may try to board his bandwagon now.
But his relatively rare media appearances mean that, presumably, the former foreign secretary recognises that he can be his own worst enemy.
His longstanding ally Conor Burns tells me he takes nothing for granted.
Mr Johnson carries his lead like an impressive yet fragile precious vase - his opponents will be hoping if they can't trip him up, he will fall over his own feet.
But on Brexit especially, his detractors cannot unite around a single alternative vision - and that may be his best hope of avoiding disaster.