The Party as Pariah: The Exclusion of Anti-Immigration Parties and its Effect on their Ideological Positions

During the past three decades, anti-immigration parties have emerged all over Western Europe. Some of them have been treated like any other party by their mainstream opponents and a few have even become members of governing coalitions (e.g., the Austrian FPÖ). Other such parties have been politically excluded: established parties have refrained from any cooperation with them and in some cases even refused to enter into a political debate with their politicians. This article investigates how the strategy of ostracising anti-immigration parties affects the internal dynamics within these parties. In particular, we assess whether these parties radicalise as a result of this strategy, and, conversely whether it has a moderating effect when these parties are approached more pragmatically. Our analyses, regarding ten parties at several moments in time, show that anti-immigration parties that were not ostracised became more moderate, whereas those that were treated as outcasts continued to be extremist.