Evidence of Partisan Agenda Fragmentation in the American Public, 1959–2015

Abstract

Abstract This research examines the extent to which partisan agenda fragmentation is occurring within the American public. Though numerous scholars of public opinion and political communication have warned of the deleterious effects of agenda fragmentation, to this point such fragmentation has been demonstrated only across a small number of issues over short periods of time. This research is the first to utilize both a large set of issues and a long time frame to assess the state of partisan agendas from 1959 to 2015 through the use of individual-level Gallup’s “Most Important Problem” polls. Findings show that the public agenda has fragmented on a large number of issues, in terms of both the level of and shifts in attention that partisans accord to issues of the day. Additionally, this research highlights the importance of recent increases in agenda diversity and carrying capacity to fragmentation, demonstrating that while the presence of large, obtrusive issues tends to be associated with correspondence in partisan agendas, the ordering of partisan issue agendas has decoupled substantially in recent decades.