PHILADELPHIA, PA - NOVEMBER 05: Democratic presidential nominee former Secretary of State Hillary Clinton (R) raises her arms with recording artist Katy Perry (L) during a get-out-the-vote concert at the Mann Center for the Performing Arts on November 5, 2016 in Philadelphia, Pennsylvania. With three days to go until election day, Hillary Clinton is campaigning in Florida and Pennsylvania.

PHILADELPHIA, PA – NOVEMBER 05: Democratic presidential nominee former Secretary of State Hillary Clinton (R) raises her arms with recording artist Katy Perry (L) during a get-out-the-vote concert at the Mann Center for the Performing Arts on November 5, 2016 in Philadelphia, Pennsylvania. With three days to go until election day, Hillary Clinton is campaigning in Florida and Pennsylvania.