America will soon head to the polls in the most eventful and fiercely contested presidential election in modern history. After a disastrous debate performance took her predecessor Joe Biden out of the running, Vice President Kamala Harris's last-minute candidacy has reignited Democratic hopes of retaining the White House. Can she muster the broad support needed to beat Donald Trump? With the outcome hingeing on a handful of swing states, Robert Moore travels to the crucial battlegrounds of Pennsylvania, North Carolina and Georgia to hear from the voters who hold the nation's future in their hands.