Niche Party Success and Mainstream Party Policy Shifts – How Green and Radical Right Parties Differ in Their Impact

This article investigates the impact of niche party success on the policy agendas of mainstream parties. Following from the expected electoral effects of issue politicization, the success of radical right and green parties will cause different reactions from mainstream parties. While mainstream parties emphasize anti-immigrant positions in response to radical right success, green party success will have the opposite effect for environmental...