Who supported the muckrakers?

Muckrakers were primarily supported by progressive reformers, journalists, and the general public who sought to address social and political issues in the early 20th century. Their investigative journalism was often backed by reform-minded publishers and magazines, such as McClure's and Collier's, which provided a platform for their work. Additionally, some political leaders and activists championed their causes, recognizing the importance of exposing corruption and advocating for social change.