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Abstract A hallmark of the Trump presidency was a stream of false statements, many of which were repeated dozens or even hundreds of times. But whether (and to what extent) this repetition translates into public misperceptions remains an open question. We address this question by leveraging the most comprehensive data on Trump’s repetition of misleading claims during his presidency. In a national survey asking Americans to evaluate the truth of claims from this database, we find a clear partisan asymmetry. An increase in the number of repetitions of a falsehood corresponded with increased belief among Republicans but decreased belief among Democrats. We also find an important moderating role of media consumption. The effects of repetition were larger when people consumed more right-leaning cable news and when falsehoods were mostly repeated on Twitter. We discuss implications of these findings for misinformation research.