AAP, which is yet to have dedicated moorings in the constituency, is banking on support of the youth and the middle class.
The AAP candidate could benefit from votes from the Sikh community and retired defence personnel.
The BSP, which had fielded Harmohan Dhawan in the 2009 election, had got over 61,000 votes last time. Dhawan was in contention for the BJP ticket this time but has been sulking ever since he was denied that.
He had been elected MP from Chandigarh in 1989 but has been losing all elections, which he contested from various parties, ever since.
In the 2009 election, Bansal had defeated BJP's Satya Pal Jain by a margin of nearly 59,000 votes.
The union territory saw nearly 65 percent polling, compared to a dismal 50 percent in the 2004 election.
