Democratic theorists have long espoused Gabriel Tarde’s view that democracy is based on difference. These differences are ubiquitous, manifesting themselves across institutions, political parties, and individuals, and generating considerable inflatable games variance in political opinion formation and voting behavior. Within the realm of political communication, particularly in the many recent studies of political deliberation, scholars have become increasingly concerned with the antecedents and outcomes of citizens’ exposure to divergent points of view in political discussion (see Held, 2006).