My money for the Cabinet ministers to quit are as follows bu in no partiuclar order. Des Browne (Defence Secretary), Ruth Kelly (Transport Secretary), Paul Murphy (Wales Secretary). This I based purely on the fact that these three chose to abstain on the Human Fertilsiation and Embryology bill, as did David Cairns and Siobhain McDonagh.
It's therefore abundantly clear that it's actually a vast Papal conspiracy against our glorious Presbytarian leader. Please pass me the tinfoil for my special hat to protect me from the evildoers and x-rays.