New Delhi, Dec 08 (ANI): Congratulating the opposition BJP for the Delhi Assembly poll results, Congress President Sonia Gandhi said that the results call for deep introspection on the reasons for the defeat. Gandhi said that the results definitely indicate that people are not happy with the party and that the party will work to overcome its shortcomings. Further, Gandhi said that Congress is disappointed with the verdict and that it will try to change its way of functioning. Talking about the upcoming general elections, Gandhi said that the party will declare its PM candidate at the opportune time.