Demi Lovato joined Hillary Clinton's campaign trail when she traveled to Iowa during the primaries and has been a vocal supporter since, according to ABC News. Later, Lovato shared a letter Clinton had sent her after the GLAAD Media Awards, writing on Instagram "Just before the #glaadawards Saturday I got this amazing and thoughtful message from an equally amazing woman, @HillaryClinton. I'm so humbled that she has my back as I have hers ... #ImWithHer" Lovato appeared on the first night of the Democratic National Convention in Philadelphia on Monday, July 25, 2016 to speak about her struggles with mental health and perform her song "Confident."

Hillary Clinton's celebrity supporters: Amy Schumer, George Clooney, more
By Newsday.com Staff Updated November 8, 2016 9:01 PM
https://www.newsday.com/entertainment/celebrities/hillary-clinton-s-celebrity-supporters-amy-schumer-george-clooney-more-1.12006219