Headline: Your guide to the Republicans challenging Trump in the 2020 presidential raceLink: https://qz.com/1696901/2020-republican-presidental-candidates/Publication Date: Wednesday, August 28, 2019Primary Source: QuartzNon-Cato Author: Ephrat LivniAnnalisa MerelliJustin RohrlichType: new media postFormat: New MediaNature of Mention: citedScholar: CatoResearch Area: Government and PoliticsSubjects: Republican challengers to President Trump in the 2020 election