Answer
The Islamic Republic Party (IRP), closely aligned with Rajai's government, played a pivotal role in shaping Iran's political landscape. This party, founded on the principles of Islamic governance, sought to establish an Islamic state based on the teachings of Ayatollah Khomeini. With Rajai's leadership, the IRP held significant influence during his presidency, contributing to the development of policies and decisions that aligned with their shared ideological and religious objectives.