Katty Kay explores the key moments and turning points in the US election campaigns and hears why Trump supporters in the key swing states such as Pennsylvania were so motivated to vote for Trump. Weeks before, in the run up to the first Presidential debate, polls indicated that the candidates were neck and neck. Then the momentum of the campaign changed, with Donald Trump rocked by the leaked tape of his lewd comments and repudiation by some Republicans. Following an astonishing second debate, Trump fought to keep his campaign on the road, returning to the tactics which had originally secured his nomination, firing up his core support with anti-Washington rhetoric and increasingly bitter attacks on Hillary Clinton. For Hillary Clinton, lingering doubts remained in voters’ minds about her trustworthiness, clouding her bid to become the first woman president, and Donald Trump is now President elect of the United States. This podcast is from the BBC World Service programme The Documentary. For more like to go to www.bbcworldservice.com/documentary or search for The Documentary in your favourite podcast catcher.