As uncertainty prevailed over the next government in Delhi, the Aam Aadmi Party Monday refused to form an alliance with other parties, and said it will sit in the opposition or go for re-polls in the state, if that would bring a clearer result."We are ready to sit in the opposition or contest for the re-elections as we do not have the absolute majority to form the government," said AAP leader Manish Sisodia after coming out of the core group meeting held at party convenor Arvind Kejriwal's residence.Sisodia said there was no question of alliance with the Bharatiya Janata Party or the Congress, as it was already made clear by Arvind Kejriwal that AAP would neither support nor approach any party for alliance.AAP, a debutant political party, has emerged as the second largest party in the 2013 Delhi assembly elections with 28 seats after the BJP, which has won 31 seats.Both of them lack the absolute majority (36 seats) needed to form the government."We will play the role of a responsible opposition party," Sisodia said.Earlier, Arvind Kejriwal Sunday said the party will form the government only if it achieves majority by following the natural process and not by forming alliance with any of the parties whose records are full of corruption allegations.