This article argues protest and violence between 2013 and 2019 both strengthened Turkey's competitive authoritarian regime in the short term and significantly weakened it over time. Crises in liberal democracy create opportunities for illiberal populists to build tightly bounded, vertical networks of supporters, but public disruptions can reconfigure such informal structures and allow new opposition networks to emerge. Using process tracing, the study shows how President Recep Tayyip Erdoğan's attempts at building a dominant, religious-nationalist community failed in the face of the 2013 protests in Istanbul and the violence around the 2015 national elections. These, in turn, altered the ruling party's vertical network. In Istanbul, the opposition took advantage of these changes to create a more pluralistic network and win the 2019 mayoral vote. After a narrow loss in the 2023 presidential contest, the opposition parties ran separately in the 2024 local elections and triumphed, pointing toward a post-Erdoğan party system. Attention to both government and opposition networks and how they change helps illustrate the dynamics of illiberal populist regimes.