Like most fields of knowledge, political science tends to progress incrementally. Typically, a political scientist develops a model about a prominent institution or common behavior and that model becomes the starting point for understanding all its other permutations. This is especially the case in studies of American state and local government, which tend to follow theories of national politics. Scholars of state legislatures typically begin their analysis by using studies of the U.S. Congress, analysts of local elections start with presidential vote models, and so on. But, as Elaine Sharp reminds us in Does Local Government Matter?, we should not be so quick to assume that models or theories about national-level politics translate easily to the local level. In fact, local politics may operate under logics all their own.