How The Light Gets In tells the inside story of the most dramatic General Election of modern times. When the 2017 snap election was called by Theresa May, most people had written off the Labour leader Jeremy Corbyn and the party was trailing the Tories in the polls by the landslide margins May wanted. Seven weeks later, voters delivered the largest increase in Labour's vote share since 1945 - and a hung Parliament. Told from the perspective of someone who was in the room for all of Labour's big decisions, this is the story of the 2017 election's twist and turns - the highs, the lows and the secret weapons. How The Light Gets In analyses why Labour did so much better than expected and shows how - to paraphrase Leonard Cohen - when you find the cracks, the light gets in.