Addressing a function to mark the 113th birth anniversary of the former Tamil Nadu Chief Minister at his birth place here, Parliamentary Affairs Minister M Venkaiah Naidu said the BJP was keen to take forward Kamaraj's legacy.
Amit Shah, President of BJP which has been making efforts to broaden its base in the Tamil Nadu where Assembly elections are due next year, was to participate in the celebrations but he cancelled his programme because of pre-occupation in Delhi.
Rao did not share the best of relationship with Congress President Sonia Gandhi during his days as prime minister, while Kamaraj had opposed Indira Gandhi and the Emergency.
Congress and BJP have already sparred over the legacy of Sardar Patel, B R Ambedkar and Subhash Chandra Bose.
Congress has also accused BJP of trying the "belittle" the contribution of India's first Prime Minister Jawaharlal Nehru and "usurp" the legacy of its leaders ever since the NDA government came to power last year.