The emotional cost of political engagement.

= 259, 1,788 observations), we examine how political engagement shapes daily affective experiences. Contrary to the prevailing notion that engaging with politics leads to sustained negative moods, we find that political engagement is characterized by heightened affective instability-that is, frequent and large fluctuations in affective states-which, in turn, predicts lower well-being (i.e., greater anxiety). Politically polarizing events are particularly destabilizing when they are highly salient and when individuals spontaneously engage with these events. Strong partisans on both ends of the political spectrum also show the greatest fluctuations in daily affect, characteristic of an unstable emotional life. By observing that political engagement is intimately tied to increased affective instability, this research reveals an overlooked emotional cost of political involvement. These findings open new avenues for understanding and mitigating the emotional and mental health consequences of political engagement in an era of deepening divides. (PsycInfo Database Record (c) 2026 APA, all rights reserved).