Whatever, Boris had, if anything as gone and all Tory MPs need to acknowledge this. He may have once been credited as an asset, but day by day, minute by minute, second by second whatever this asset was is diminishing at ever greater increasing speed. So, that asset, is now a vastly increasing liability and anyone seen to be continuing to be associated with Boris will see themselves become deeply resented and could even be unelectable when they are standing again for election to be a MP.So it is not only in the countries interest for Boris to go sooner than later, but also their own.
Source: Twelfth Tory MP calls on Boris Johnson to resign as prime minister | The Independent