Donald Trump and Kamala Harris delivered their closing arguments, holding duelling rallies across the battleground states well into the night, on the last day of campaigning before the US election. Harris was in Pennsylvania, the biggest swing state and crucial to the Democratic campaign. She held the final rally of her campaign at the steps of the Philadelphia Museum of Art. Introduced by Oprah Winfrey and Lady Gaga, Harris emphasised her message of hope. Trump struck a darker tone in the same state, with threats to put tariffs on all imports from Mexico unless it stopped people from entering the US.