Isn't Jaiprakash Narayan the leader who successfully challenged the power of a ruling party in India?

Narayan led student agitators in Bihar in a fight against government corruption, and under his leadership, a People's Front took power in western Gujarat state. Indira Gandhi responded by branding Narayan a reactionary fascist. In 1975, when Gandhi was convicted of corrupt practices, Narayan called for her resignation and a massive movement of pacifist noncooperation with the government. Gandhi declared a national emergency, jailed Narayan and 600 other opposition leaders and imposed censorship of the press. In prison, Narayan's health collapsed. After five months, he was released. In 1977, thanks largely to Narayan's uniting of opposition forces, Gandhi was defeated in an election.