The study of far-right parties and politics is one of the most high-profile research areas in political science and related disciplines. Far-right parties have been the subject of vast amounts of varied scholarship since their turn-of-the-century resurgence. However, as the far right has become a mainstay, with Brexit and the election of Donald Trump in 2016 blurring the boundaries between mainstream and far-right politics, it has become crucial to pay attention to the process of mainstreaming. Beyond a focus on far-right electoral success, studies of mainstreaming, as well as a critical account of the concept and role of the 'mainstream', have proved elusive. This article provides a heuristic framework to understand these concepts and the mainstreaming of the far right. Key to our approach is a more holistic analysis, extending beyond traditional approaches which focus mostly on the electoral outcomes of far-right parties, positioning the mainstream as a relatively inert target or bulwark against them. To achieve this, we seek to reframe the focus towards the centrality of discourse both in the process, and as an outcome, of mainstreaming. Only by doing so can we account for the significant role played by the mainstream in this process.Discussion and debate about the far right, its rise, origins and impact have become ubiquitous in academic research, political strategy and media coverage in recent years. One of the issues increasingly underpinning such discussions is the relationship between the far right and the mainstream, and more specifically, the mainstreaming of the far right. 1 This is particularly clear around elections when attention turns to the electoral performance of these parties. When they fare as well as predicted, catastrophic headlines simplify and hype what is usually a complex situation, ignoring key factors which shape electoral outcomes and inflate far-right results, such as trends in abstention and distrust towards mainstream politics. 2 When these parties do not perform as well as predicted, the circus moves on to the next election and the hype starts afresh, often playing a role in the framing of, and potentially influencing, the process. This trend is not entirely new, 3 and there is no denying that far-right parties and politics have played a significant role in shaping the current political landscape in Europe. Some strong electoral performances attest to this: most recently, the Lega and Austrian Freedom Party formed part of coalition governments in Italy and Austria (if only briefly),