Kolkata: Calling for a "collective leadership" to oust the Narendra Modi regime from the Centre in the coming Lok Sabha elections, West Bengal Chief Minister Mamata Banerjee on Saturday said all anti-BJP parties have to join hands for the sake of the nation.

Speaking at the 'United India Rally' here, Banerjee parried the question of who would become the Prime Ministerial face of the opposition, saying everyone is a leader in the proposed alliance.