In a last ditch effort to form an alliance with the Congress, the Aam Aadmi Party has postponed the nomination of its candidates, senior party leader Gopal Rai said Friday. The effort was being made to save the country from the Modi-Shah duo, he said. On Saturday, East Delhi candidate of AAP, Atishi, Chandini Chowk candidate Pankaj Gupta and North West candidate Guhan Singh were to file their nominations. Sources said AAP leader Sanjay Singh has proposed to the Congress that the party would not field its candidate from Chandigarh and give the grand old party outside support in the Union Territory, if an alliance is formed in Delhi with the 5:2 seat-sharing formula, five for the AAP and two for Congress.