Kamala Harris makes one last plea to voters in the swing state of Pennsylvania, urging them to "make their voices heard." "We need everyone to vote in Pennsylvania," she says. Harris is preceded on stage by stars including Oprah Winfrey, Lady Gaga and will.i.am. (COMPLETES VIDI36LK7KU_EN and VIDI36LF4C4_EN IMAGES AND SOUNDBITES