Former Jammu & Kashmir Chief Minister Omar Abdullah on Saturday said the proposed Federal Front will take a "greater shape" before the 2019 general elections and no effort for opposition unity will succeed unless the Congress is able to take the fight to the BJP.

"We were discussing how best the regional parties can come together to take on the Bharatiya Janata Party (BJP) in the forthcoming general elections. Obviously, no effort towards opposition unity will really succeed unless the Congress is also able to take the fight to the BJP the way we hope," the Jammu and Kashmir National Conference leader said on the sidelines of an event -- Think Federal Conclave.