► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />The Labour party is set for its first big test this year, in local and devolved elections. FT editor Lionel Barber and political commentator Janan Ganesh discuss the likely impact of the London mayoral election on the party and its leader, Jeremy Corbyn.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes