"Delhi needs a stable, strong, corruption-free government. I have the experience, time and energy to make Delhi a world-class capital city," she declared after becoming an online member in the presence of BJP president Amit Shah and Union Ministers Arun Jaitley and Harshvardhan.

The party's surprise move came a day after the Aam Aadmi Party charged the BJP's Delhi unit president Satish Upadhay's company with "conflict of interest" in providing faulty metres to Delhi in 2012.

"The BJP will be be strengthened by Kiran Bedi joining the party and afterwards during government formation in Delhi," Mr. Shah said while inducting her into the party.

He, however, declined to say if she was the party's chief ministerial candidate or whether she will take on Aam Aadmi Party leader Arvind Kejriwal in the elections. "Leave it to the Parliamentary Board to decide," he said answering questions from the media.

Ms. Bedi, a former colleague of Arvind Kejriwal in Anna Hazare's anti-corruption movement, had met Prime Minister Narendra Modi before she came to the BJP headquarters to join the party formally. She said Mr. Modi was her inspiration since May 2014 when he led the BJP to victory in the Lok Sabha elections.She praised him for "reviving hope" in the country.