This article analyses the capacity of radical right parties to attract support from un-ion members in recent elections in Western Europe. It is argued that unionized vot-ers resist the appeals of the radical right better than non-union members. Using data from the European Social Survey 2010–2016, the article shows that union members are overall less likely to vote for the radical right than non-union members. Even though it is found that unionized working-class and middle-class voters are less like-ly to vote radical right than their non-unionized peers in the pooled sample, it is also observed that these subgroups of unionized voters and especially unionized working-class voters are not immune to radical right voting in all the countries analysed. The article thus indicates a growing capacity of the radical right to attract unionized working-class segments of the electorate in some countries and to directly compete with left parties for these voters.