Disastrous results for Labour in local and regional elections, followed by a messy shadow cabinet reshuffle, have raised massive questions about the party's future.

David Kogan, author of "Protest and Power: The Battle for the Labour Party" tells Bloomberg Westminster's Caroline Hepker and Roger Hearing the party can win again, but the leadership needs to establish what it's for and what it's trying to achieve.

Plus Andrew Harrop, general secretary of the Fabian Society, joins to discuss how to win back the voters who have turned away, and explains how social liberalism can still win elections.