Tamil Nadu unit BJP president Tamilisai Soundarajan on Monday said the list of those joining the party was growing as it was the "last hope" for the nation's development and a corruption-free administration.

"Several anti-corruption crusaders, philanthropists and neutral public figures are joining BJP as it is the last hope for the nation's growth and to provide a corruption-free administration," she told reporters in Coimbatore.

She was replying to a question on whether Tamil film superstar Rajinikanth would join BJP at a public meeting to be addressed by Prime Minister Narendra Modi in Coimbatore on Tuesday.

Evading the question, she merely said, "The list of those joining BJP is long and going on." 

When reporters asked the same question to BJP national secretary Muralidhar Rao, he said "all things" would be answered by the Prime Minister in the public meeting.

BJP is looking for a strong alliance for the coming Assembly elections in Tamil Nadu.

Modi had met Rajinikanth weeks before the commencement of Lok Sabha elections in 2014 at his residence in Chennai, but the actor had described it as a courtesy call.