A by-election was held in September 1974 to fill the vacant seat for Shahsavar in the National Consultative Assembly, the lower house of the Imperial State of Iran.

[1] The representative of Shahsavar in Mazandaran province who had been appointed to a cabinet office, resigned his seat due to legal requirements.

[1] People's Party launched a serious campaign for its candidate, which focused on criticizing the government's ability to "implement efficiently the shah's intentions (manviat-e shahaneh)".

[4] Mansour Khalatbari, the candidate of the ruling New Iran Party, said on 28 September "my defeat is utterly impossible" as the ballots were being counted.

[5] In response to the controversy, Mohammad Reza Pahlavi remarked that the election was fair, but also said the ruling party "must probe this event to see what has caused it.