The rise of anti-immigrant parties has reshaped global politics, forcing mainstream parties to recalibrate their strategies. This study examines how Turkish political parties responded to the emergence of the Victory Party (Zafer Partisi) in 2021, which placed immigration at the center of political debate. Drawing on 1,089 parliamentary group speeches (2011–2023) and elite interviews with key party figures, we identified three key factors shaping party responses: voter overlap with radical-right parties; reputational risks associated with shifting policy positions; and access to political power. Our findings revealed five strategies: issue avoidance; amplification; cooptation; repositioning; and reinforcement. Unlike conventional models that emphasize voter competition, we highlight the role of political power in shaping party strategies, particularly in competitive authoritarian settings. This study advances the understanding of how mainstream parties navigate niche party pressures, offering a broader perspective beyond Eurocentric and electoralist frameworks.
