KATHMANDU: Newly elected President of Nepali Congress and former Prime Minister Sher Bahadur Deuba on Thursday said that his party would complete the responsibility of implementing the Constitution as it was promulgated in his party's leadership. In a congratulatory programme organised by the Nepal Students Union (NSU), a sister wing of the party, on his election to the post at his residence in Budhanilakantha today, leader Deuba added that his party would play positive role to solve the issues raised by the Madhes-based parties including the rove over demarcation of provinces. He further said that he would take initiatives to hold party's sister wings' conventions as they were stalled for long. On the occasion, NSU chair Ranjit Karna had urged party President Deuba to hold the NSU convention and the free students union's election at different universities.