In the 21st century the Labour Party has undergone the most extraordinary transformation in its history. After more than a decade of political dominance, the party lost two consecutive general elections and found its leadership usurped by the obscure far-left MP Jeremy Corbyn. As Britain voted to leave the EU, Labour seemed destined for long term irrelevance.But then it all changed. Far from being the death of the party as many had predicted, at one fell stroke the general election of 2017 heralded its strange and unexpected rebirth. Against all the odds, Corbyn became the first Labour leader since 1997 to gain the party seats, and was simultaneously hailed as the saviour of the British Left and a harbinger of doom for its New Labour elite. Here, journalist Lewis Goodall tells the full story of this political revolution with unprecedented access to all its key players, from Blair to Corbyn.