KOLKATA: Trinamool Congress has endorsed Aam Aadmi Party for the Delhi polls, with Rajya Sabha MP Derek O’Brien urging people to vote for chief minister Arvind Kejriwal and all AAP candidates.Posting a video of Rajendra Nagar constituency in Central Delhi , Derek said: “What they promised, they have delivered. The candidate is Ragh-av Chadha, he is a boy from here, very enthusiastic. One of the youngest bright minds I have seen in Delhi. Vote for AAP, vote for Raghav Chadha . May Aam Aadmi Party do very, very well.” CM Mamata Banerjee enjoys a very good personal rapport with Kejriwal.Senior BJP leader Kailash Vijayvargiya said: “TMC is fast losing ground in Bengal and is extending support to AAP in Delhi, where it doesn’t have any existence. The less we speak on such issues, the better.”