Since the 1980s, the number of political polls has increased 10-fold, and starting in the last decade, an increasing number of Internet polls have come to be based on convenience samples, no longer even maintaining the appearance of representativeness (Hillygus, 2011). Today, policymakers are increasingly aware of the dangers to democracy that arise from the spread of disinformation over social media and radicalization within echo chambers (Bastos, Mercea, & Baronchelli, 2018; Persily, 2017). In this context, a comprehensive understanding of the effects of polls on voters is crucial to avoid extreme polarization within the electorate and to protect against manipulation of public opinion.