Deja vu? Polarization and Endangered Democracies in the 21st Century

As political and societal polarization deepens, democracies are under stress around the world. This article examines the complex relationship and causal direction between democracy and polarization and posits three theoretical possibilities: (1) polarization contributes to democratic backsliding and decay, (2) polarization results from democratic crisis, and (3) polarization contributes to democratic deepening. We argue "politics" is central to polarization and identify as a key feature of the process of polarization the manner in which it simplifies the normal complexity of politics and social relations. Polarization does so by aligning otherwise unrelated divisions, emasculating cross-cutting cleavages, and dividing society and politics into two separate, opposing, and unyielding blocks. As such, it often has pernicious consequences for democracy, emerging as an intended or unintended consequence of political interest-based and purposeful political mobilization. Polarization over the very concept of democracy may also be the product of democratic crisis. Finally, in certain circumstances, polarization may strengthen democratic institutions and citizen choice. The article then introduces the articles in this issue that address these three theoretical and empirical possibilities.