UK Prime Minister Boris Johnson resigns after historic party revolt over a series of scandals cnn.com

It took the resignation of nearly 60 members of his government — almost half the payroll — for Johnson to finally abandon his attempts to cling on to power. Even then, the Prime Minister insisted that he would continue as caretaker leader while the Conservative Party launches the process of choosing a successor.

Some senior figures in his party say even that will be unsustainable, given the dwindling number of people willing to work for him.

Others are already lining up to replace him. Party officials say they will announce the timetable for a leadership election by Monday.