Aam Aadmi Party leader Arvind Kejriwal has sent a formal invitation to Delhi Chief Minister Sheila Dikshit inviting her for an open public debate.br br Kejriwal's official invitation to the Delhi CM came days after she told a TV news channel that she was ready for a debate with the AAP leader if he formally writes to her. She had said, "I am not shy of a political debate. I have debated with Sushma Swaraj in the past. Public debates are healthy in a democracy.