Paul Blumenthal is a prominent American journalist and senior reporter at HuffPost, specializing in political finance, dark money, and conservative donor networks. He extensively covers the influence of wealthy donors and opaque funding mechanisms in U.S. politics, often exposing how secretive money shapes elections and policy. His investigations have targeted groups like the Koch brothers' network and other conservative megadonors, including adversarial reporting on figures such as Farris Wilks for funding far-right causes through anonymous channels. Prior to HuffPost, he worked at the Sunlight Foundation, a nonpartisan transparency organization, focusing on open government and campaign finance reform. Blumenthal is recognized for his meticulous research, data-driven approach, and use of public records and leaks to uncover hidden financial ties. His work contributes to public understanding of how dark money undermines democratic processes and has influenced policy discussions on election finance laws, drawing attention from both progressive and conservative circles as a key voice in debates over money in politics.