Kaka Tim
Half Arsed and Slapdash till I Die
Well its all internal isn't it? Noone HAS to do anything, if any magic tipping point is reached I am sure it will all discussed internaly in private, rather than TM suddenly being tipped out of her chair like a crystal maze game show.
once they reach 48 letters - the parliamentary party have to have a vote on weather they have confidence in her leadership. Its their rules - there's no choice about it.