Much of the literature on India has historically held the idea of class politics as of minimal importance, certainly secondary to ethnic politics. Recently, there has been a response wave of literature that has argued that class politics is something that has been overlooked, but is nevertheless evident in India. My paper builds on this latter set of literature and argues that, instead of a more generalized analysis, the best way to study class politics in India is to look at the two states in which it has historically been prevalent: West Bengal and Kerala. Both states have had communist parties that have ostensibly been able to mobilize along class lines and have won numerous elections since independence. Yet, class mobilization appears to be less prevalent in all other Indian states. My paper thus seeks to analyze this following question: why have communist parties been able to mobilize along class lines in West Bengal and Kerala and not in other Indian states? Though a wide range of authors have studied either West Bengal or Kerala independently, there have been very few studies that bundle both cases together - despite their similarities. Moreover, most existent explanations may be able to explain why West Bengal and Kerala have seen class mobilization, but they rarely try to explain its absence in other Indian states. Though my research is still in its preliminary stages, I have a three-part explanation for the rise of communism and class-based mobilization in West Bengal and Kerala that attempts to both bundle these two cases together and explain why they are unique as compared to the rest of India. First, I argue that the Congress Party - India's most dominant political party, which won seven of the first eight parliamentary elections after independence - was exceptionally weak in West Bengal and Kerala, which opened up the political opportunity structure in those two states for other political parties. The communists struck quickly in both states and established themselves as a key early player. Second, it argues that the communist party in both of these states was an exceptionally well-run organization that mimicked the ability of the Congress Party to build coalitions and unite voters along class lines. Third, it argues that the long-run success of these parties is due to their developmental policies that expanded social welfare programs and created self-sustaining constituencies and an environment that allowed for their continued electoral success. In the remainder of the paper, I attempt to contrast the development of communism in West Bengal and Kerala with several failed attempts to develop communism in other Indian states. Furthermore, my paper also peripherally relates to the literature on ethnic conflict, which in regards to India has long held the belief that ethnicity trumps class. Through studying the states of West Bengal and Kerala, I will show two cases in which the reverse is true, thus reaffirming the need to reassess the role of class politics in India. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]