Since its foundation in Egypt, Muslim Brotherhood (Al-Ikhwan Al-Muslimin) has always been an organization that is interested in all forms of social issues. This feature of the movement facilitated the organization’s spreading across the region, especially to the neighboring countries, and institutionalization in almost all the Arabian countries in the course of time. The internal dynamics of the countries in which the movement is organized and the stances of these countries towards regional and global problems have affected the organizational appearance and the activities of the movement and paved the way for a certain level of country-specific institutional and ideological variations. While some of the branches acted in line with the rules of the political system of the countries they are operating in, others challenged it. Jordanian Muslim Brotherhood has been among the first group, so it has had legally legitimate relations with the country’s political system. In Jordan, it is possible to say that the movement attributes special meaning to the elections –in the form of both participating and boycotting– to form a legitimate opposition towards the regime. This study argues that the movement uses the decision to participate in the elections or boycotting them as a means of legitimizing or undermining the regime, which in return also confirmed the legitimacy of the movement. This paper studies all the elections held in Jordan since the political liberalization process started in the country (1989-2020) and analyzes them using personal interviews with the leaders of the Muslim Brotherhood and its political wing, the Islamic Action Front.