Despite the importance of mass media to deliberative democratic processes, few scholars have focused on how market forces, occupational norms, and competition among outlets affect the quality of media discourse in mainstream and political outlets. Here, I argue that field theory, as outlined by new institutionalism and Pierre Bourdieu, provides a useful theoretical framework for assessing the quality of media discourse in different kinds of media outlets. The value of field theory is that it simultaneously highlights the importance of homogeneity (...) and heterogeneity within a field of action, which provides a framework for discussing the roles different kinds of outlets play in deliberate democratic processes and evaluating the quality of discourse in mainstream and political venues. I illustrate the utility of this conceptualization through an analysis of 1,424 stories on abortion in nine U.S. media outlets and interviews with journalists, editors, and producers in these venues. I find that political media outlets provide higher-quality discourse than that of mainstream venues. Additionally, I find that while market pressures may heighten a focus on conflict in the abortion debate, this emphasis is exacerbated by mainstream journalists themselves, who assume that the general public is familiar with, and has taken a firm position on, abortion. I conclude by discussing the implications of these findings for deliberative democratic processes. (shrink)