European integration has resulted in the emergence of political parties at the European transnational level. These parties are primarily consisting of members of the European parliament from various EU-member states. Thereby a substantial number of the MEPs today have two party memberships to adhere. This study aims to analyse the differences and similarities in the election manifestos of the Swedish party Moderaterna and the European People’s Party, examine the prevalence of the two concepts europeanization and eurocentrism between the two parties manifestos and investigate possible explanations stemming from the different concepts and the empirical study The europeanization of national political parties. Therefore said study consists of a comparative analysis of the manifestos in the categories energy, environment, integration and defense in order to highlight the differences and similarities. The result reveals that there are examples of both europeanization and eurocentrism in each manifesto in all categories. The results also made it clear that the two concepts and the empirical study could explain some of the differences and similarities pointed out between the two manifestos, but not all of them.