This dissertation describes the process of political development in North Carolina during the twentieth century. Beginning with the creation of the "solid South" in the early twentieth century, North Carolina's unique one-party system featured a spirited rivalry within the Democratic Party that was largely absent throughout the South. The political rivalry between conservative and progressive Democrats profoundly influenced the course of North Carolina's political development. Following the Second World War, the interaction between state and national politics played a significant role in the development of the state's two-party system. By the end of the twentieth century, a competitive two-party system supplanted one-party politics. Histori...