The UN Committee on the Rights of the Child has repeatedly criticized Sweden for the differences regarding the implementation of the Convention on the Rights of the Child (CRC) at the municipal level. Even so, studies show that there is a political will in the municipalities when it comes to realize the CRC. It indicates that there are challenges in terms of implementation. This thesis examines the implementation process in two Swedish municipalities where the local government has decided to implement the CRC. The purpose is to identify and describe the challenges that exist in the municipalities regarding the implementation and to determine to what extent the challenges can be influenced from the political level. The theoretical framework is grounded on theories of policy implementation and the findings have been compiled through interviews and qualitative text analyses. The study identifies challenges that are related, inter alia, to the ability to evaluate and control the implementation and the findings implies that the majority of the identified challenges can be influenced from the political level.