On November 8, 2019, Hornberger was endorsed by historian and author . On November 11, 2019 radio host and anti-war activist Scott Horton also endorsed Hornberger, followed by Comedian and podcaster Dave Smith. Jake Porter, nominee for Governor of Iowa in 2018 endorsed Hornberger December 7, 2019. Jake Porter is now Hornberger's campaign manager for his 2020 presidential campaign Businessman and Chair of the Tulsa, OK chapter of the Libertarian Party of Oklahoma Todd Hagopian endorsed Hornberger on January 3, 2020. "The Liberty Herald" endorsed Hornberger December 29, 2019. The Libertarian Party Mises Caucus endorsed Hornberger January 7, 2020.