The debate regarding a national parliaments’ opposition in EU politics is ambiguous andremarkably underdeveloped. Historically researchers argued that opposition in the context of national parliaments and European integration is decreasing at the national level. However, this idea has been challenged during the last few years by a few researchers when studying opposition in EU Member States and specifically Sweden. Even though the idea of a decreasing opposition at the national level has been challenged, researchers have primarily focused their studies on measuring opposition through quantitative approaches. Consequently, there is a shortage of research examining opposition through a qualitative lens which could grant there search field a more nuanced perspective of the opposition occurring in national parliaments.The purpose of this thesis is to investigate if and how opposition takes place in the Swedish European Affairs Committee [EAC], through a theoretical lens of opposition and parliamentary transformations. The thesis offers a comprehensive qualitative analysis of opposition by usinga reflexive thematic analysis. The results show that opposition exist in the Swedish EAC. However, political parties repeatedly fail to present alternatives to EU proposals and fail to debate suggestions stemming from the EU. This thesis shed light of how domestic opposition in EU politics can be studied through a qualitative lens and provides a more nuanced depictionof opposition.