London, 2012. It’s Olympic year, and east London is sprouting anew, and our city feels like the capital of the world. And on this mighty, epoch-making canvas, two political heavyweights do battle. In the blue corner, Boris Johnson, the incumbent, and perhaps the most recognisable politician in the land. In the red, Ken Livingstone, his predecessor and opposite in almost every way, except for the reputation for shagging.