Senior AAP leader H.S. Phoolka was on Wednesday elected the Leader of the Opposition in the Punjab assembly.Aam Aadmi Party (AAP) leader Sukhpal Khaira was elected the Chief Whip, AAP's Punjab convener Gurpreet Ghuggi told reporters here.The decision was taken at a meeting at Delhi Chief Minister Arvind Kejriwal's residence where all Punjab AAP MLAs were present.Phoolka said the party would keep a close watch on all decisions taken by the newly-elected Congress government in Punjab and would perform the role of a constructive and an active opposition.While the Congress swept to power in Punjab winning 77 of the 117 seats, the AAP came second with 20 seats. AAP ally Lok Insaaf Party won another two seats.