The chapter analyses the Bulgarian experience of Europeanization: its achievements, weaknesses, and patterns of convergence with EU norms and rules. The chapter is structured in four parts. First, it offers a brief historical overview of Bulgarian accession to the EU. Secondly, the impact of EU membership on public opinion and political parties is evaluated. The third part presents the impact of EU membership on Bulgarian political institutions and governance. Finally, a brief comparison is offered with the Romanian experience of Europeanization. The underlying argument is that the process of Europeanization has been a slow one.