Research on affective polarization—that is, dislike and hostility across party lines—originated in the study of the American two-party system and only recently traveled into multiparty contexts. This emerging body of research is hindered by lack of comprehensive data that capture multiple dimensions of polarization and examine how they develop over the course of political events such as electoral campaigns or the formation and dissolution of coali- tion governments. This research note introduces the Israel Polarization Panel [IPP] Dataset, 2019-2021, designed specifically to address this shortcoming. The IPP consists of 10 panel waves, following the same individuals over four elections. We first survey the key features of the IPP and then discuss its applications. The dataset is publicly available and should be of interest to scholars of polarization, political behavior and electoral politics.