Boris has got nothing to offer Londoners in terms of policies. Ken will cut fares by 7%, compete with letting agencies and energy firms to bring down costs for consumers, and generally spend money much more prudently and effectively than Boris because 'Ken does detail'.
Ken has promised to resign by 7th October if he doesn't come good on his fares cut. I don't see how any London commuter can lose by voting for Ken, yet still he trails in the opinion polls. Maybe Ken should promise to run through Trafalgar Square naked if elected - that is the only thing that might get the media and public's attention in this sad excuse for democratic debate.