Rohr, B., & Martin, J. L. (2025). The State and the Emergence of the First American Party System: Roll Call Voting in the New York State Assembly during the Early Republic. American Sociological Review, 90(4), 726-754. https://doi.org/10.1177/00031224251344574

Prevailing theories about the nature and development of the democratic party system fail to account for the important case of the United States. Using a novel dataset on legislators and roll call votes in the New York State Assembly after the ratification of the U.S. Constitution, we show that, contrary to existing accounts, legislative parties had already formed at this early stage. Yet these parties did not arise from the translation of social cleavages such as economic or social class into political oppositions, as sociologists might expect, nor were they merely networks of powerful elites disconnected from the polity, as political scientists and historians have suggested. Instead, these parties coalesced around formal issues—structural questions like the procedures for election and appointment, questions whose answer would determine the rules of the game for future contests. Parties emerged, we argue, not because of an inherent need to adjudicate conflicts between sectors of the polity, but because of the organizational affordances of the modern democratic state. Our findings suggest the formation of party systems is an integral part of the formation of the modern state.