Abstract
Since October 7, 2023, antisemitism on American campuses hasbecome a contested political issue. Scholars of antisemitism arguethat the relationship between antisemitism and political ideologyfollows a “horseshoe” pattern, with higher levels of antisemitichostility on both the far right and far left. However, existing empiricalresearch has yet to establish this connection, in part becauseantisemitism may be expressed differently on opposite sides of theleft-right political spectrum. To address this challenge, we develop ameasure of antisemitism grounded in both formal definitions andempirical data about how US Jewish college students perceive anti-Jewish and anti-Israel statements and then measure the prevalenceof these attitudes among non-Jewish US college undergraduates. Wefind that explicit anti-Jewish attitudes are more common amongthose with far-right political identities, and beliefs about Israel thatformal definitions and most Jewish students find antisemitic aremore common among those who identify with the political left.