The American political space depicted in Theodore Dreiser’s The Financier and The Titan presents a clear picture of the antagonism that prevailed in the United States between capitalism and socialism in the first half of the 20th century. We set out in this paper to portray how Dreiser problematizes corruption in American politics and how this challenge is addressed. This study is significant in that corruption is still endemic in American politics, and the reforms suggested in Dreiser’s novels under study are still relevant today as far as the democratization process in the United States of America and the world is concerned. This study is based on the hypothesis that the 20th century American political space portrayed in Dreiser’s The Financier and The Titan is plagued by corruption. The Marxist theoretical approach was considered suitable for our analyses in this study. The major finding of this study borders around Dreiser’s commitment in the two novels to castigate the alarming rate of corruption that has destroyed party politics in the United States of America. One also finds out that Theodore Dreiser fully endorses Karl Marx’s vision of a classless society as an ideal system that can eliminate the inequalities that prevail in the capitalist space. According to him, such a classless society can go a long way to reduce (to the barest minimum), corruption in American politics.