Soft-spoken but a man with strong conviction, Kejriwal, a Ramon Magsaysay award winner, came into prominence from the agitation by 75-year-old Hazare in support of Jan Lokpal Bill in 2011.
“These are historic results. This is not a victory of Aam Admi Party, it is a victory of the people,” he said amid loud cheers by his supporters at the crowded office.
The party had produced a separate manifesto for each constituency.
The candidates were being screened for potential criminal backgrounds and the party claimed to have selected honest candidates.
Heavyweights who lost the polls included assembly Speaker Yoganand Shastri, Health and Family welfare minister A K Walia, Public Works Department Minister Raj Kumar Chauhan, Education minister Kiran Walia, Transport Minister Ramakant Goswami and Deputy Speaker Amrish Singh Gautam.
Two ministers, Arvinder Singh and Haroon Yusuf, retained their seats amid the Congress rout.
Shastri came third in Mehrauli constituency where former Chief Minsiter Sahib Singh Verma's son Parvesh won.
Health Minister K Walia lost to AAP candidate Vinod Kumar Binny by a margin of 7,752 votes in Laxmi Nagar while Chauhan lost to AAP's Rakhi Birla by a margin of 10,585 votes in Mangolpuri. Kiran Walia and Goswami came third in Malviya Nagar and Rajinder Nagar constituencies respectively.
Gautam also finished third in Kondli constituency.
The hung verdict in Delhi Assembly polls has raised intriguing questions about government formation in the national capital.