Which candidate in the presidential election if 1912 ran mostly to widen the audience for socialist ideas?

In the 1912 presidential election, Eugene V. Debs ran primarily to widen the audience for socialist ideas. As the candidate for the Socialist Party, Debs aimed to promote socialism as a viable alternative to the existing capitalist system, advocating for workers' rights and social justice. His campaign helped bring national attention to socialist issues and significantly influenced American political discourse at the time.