DURHAM, ENGLAND - JULY 11:  Potential Labour party leader Jeremy Corbyn speaks to crowds during the annual Durham Miners Gala on July 11, 2015 in Durham, England. This is the 131st gala which brings together the communal values, culture and mining heritage of the north east of England. Thousands of people attend the event to listen to the brass bands, socialise and show their allegiance to the banners from the former colliery villages throughout the north.  (Photo by Ian Forsyth/Getty Images)