After Bloomberg's debate among the four main candidates to be London mayor, Bloomberg Opinion columnist Therese Raphael discusses the issues raised, and IPSOS Mori´s chief executive Ben Page brings us the latest polling numbers.

Plus Paul Swinney, director of policy and research at Centre for Cities and Rob Whitehead, director of strategic projects at Centre for London join Bloomberg Westminster's Caroline Hepker and Roger Hearing to consider the key concerns for whoever is elected to City Hall.

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