The campaigns officially started at 00:00 Thursday (20:30 GMT, Wednesday), and the candidates will have one week to win the people’s support for their candidacy.
The 11th parliamentary elections and the midterm elections for the Assembly of Experts – a body whose members designate the country’s Leader – are to be held simultaneously on February 21.
The candidates will have until Wednesday night to promote themselves, and after that, there will be a 24-hour silence until the voting begins on Friday morning.
The elections, held every four years, are scheduled to take place on February 21. A second round could take place in the second month of the next year on the solar calendar (April 20-May 20, 2020) if some seats remain vacant.
Last year, Iran's parliament objected to a motion to increase the number of the seats, keeping the figure at 290.
A total of 57,918,000 people are eligible to cast their ballots, therefore; there would be one lawmaker at the parliament per each 190,000-strong segment of the Iranian population.
A total of 7,148 candidates, including dozens of Iranians from the religious minorities, are running for the parliament.
In capital Tehran, 1,453 candidates are contesting one of the 30 allocated seats on the legislature.
The lawmakers are elected for a 4-year term, with no limitation for the incumbent or former parliamentarians to run again.