Mr Portillo said: "I would guess that Boris is sort of teetering on the edge of a cliff at the moment because what matters to the Conservative Party is whether he has an electoral asset or not." Mr Johnson is facing surging criticism following allegations of a lockdown-rule-breaking party in Number 10. The electoral commission declared on Thursday that the Conservative Party had failed to "accurately report a donation and keep a proper accounting record" in relation to the redecoration of Boris Johnson's Downing Street flat. Tonight's panel will feature Conservative MP Rachel Maclean, Labour MP Anneliese Dodds, entrepreneur Steven Bartlett, actor Adjoa Andoh and broadcaster Michael Portillo. Ms Maclean supported Michael Gove in his 2019 leadership bid.

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       Additional reporting by Tara Fair