Kamala Harris holds final campaign event before Election Day in Philadelphia on Art Museum steps CBS NewsLady Gaga, Oprah among celebs to appear at Kamala Harris rally in Philly NBC PhiladelphiaOn the night before Election Day, Kamala Harris brings in celebrities. Donald Trump is unimpressed The Associated PressWATCH LIVE: Trump holds final campaign rally in Michigan before voting begins Tuesday PBS NewsHourAt final Harris rally, Oprah warns a Trump presidency could end voting rights Fox News