"No party can secure a single majority" in the elections, Roy told a function at Heingang in Imphal West district.
He also gave his formal approval for the merger of the newly formed party Meetei Nationalist Party at the function.
Later, Trinamool candidate P Sarat urged to uproot both BJP and Congress from Heingang Assembly constituency for continuously "fooling" the people.
He said why the 3-month long economic blockade could not be brought to an end when the state government had the capacity to create seven new districts in just "one night.