As the elections for the Islamic Consultative Assembly and for the Assembly of Experts are held in Iran in 2024, extensive disqualification of reformist candidates has posed a serious impediment to meaningful political participation. This has, in turn, resurfaced discussions on obstacles to political development in the post-revolutionary Iran. Indeed, the main criticism of the elections in Iran is focused on the disqualification of reformist candidates both in parliamentary and presidential elections as well as in elections for the Assembly of Experts. Many believe that the Guardian Council has gone beyond its authority to supervise the elections. According to the election law, the Guardian Council must supervise the Executive Electoral Boards, which are charged with examining the qualifications of the candidates. There are certain characteristics that are interpretable and vague such as believing in Islam, to be faithful to the tutelage of the jurisprudent, and to be committed to the Islamic Republic system. The main question this research seeks to answer is: What factors led to the rise of elections engineering in recent years and what will be its implications for political development in Iran? The hypothesis in response to the main question is that the Guardian Council has interpreted requirements for the candidates in a peculiar manner in order to disqualify those who could possibly challenge the electoral victory of the conservative political faction particularly within the past four years. This in turn will pose serious obstacles to the process of political development in Iran. Elections engineering is actually a term openly used in Iran to describe recent elections in which the process of disqualification assured that the reformists had no chance to run candidates for most of the seats in the parliament, presidency or Assembly of Experts. This has transformed the Iranian political system into an electoral authoritarian one with severe consequences for the legitimacy of the government. Iranian electoral system used to be elections with limited choices, but it has evolved into elections without choices, thus curtailing Iranian people’s chances for meaning political participation. Keywords: Elections Engineering, Assembly of Experts, Guardian Council, Political Development, Political Participation