The Indian government has put forward a bill ensuring a third of seats for women in the lower house of the parliament and state assemblies.
The bill, which was initially presented in 1996, has been in the works for decades, amidst objections from various political parties, reports BBC.
Its return is likely to bolster the chances of the ruling Bharatiya Janata Party's (BJP) luck in national elections next May, it said.
The bill was introduced during the first session of the new Indian parliament, but it is still a long way from becoming law.
It would need the consent of both houses of the parliament and a majority of state legislatures, as well as the signature of the Indian president.
The reported proposals to raise the total number of seats might complicate implementation even further, the report said.
Indian Prime minister Narendra Modi lauded the proposed law and said it was a historic occasion for the country in his inauguration speech at the new parliament building.
"The world understands that only talking of women-led development is not enough. This is a positive step taken on that front," he told politicians as he appealed to them to support the bill.
He also took a shot at the opposition, claiming that the past Congress-led administrations had failed to pass the measure while they were in office.
"There have been discussions around women's reservations for years. We can say with pride that we have scripted history," he said.
Modi opened the new parliament building in May, but no business has been conducted there until now.
He convened a five-day special session, which began on Monday but was held in the old parliament building on the first day.
Members of the two houses gathered for a picture session in the old building on Tuesday morning, followed by a ceremony commemorating parliament's history in the Central Hall of the British-era structure.
They subsequently relocated to the new parliament, which was formally named as the Parliament House of India by the office of the lower house of parliament.