"Those who won the Lok Sabha polls by weaving illusion in the minds of people should now realise that masses are no longer prepared to fall in their trap," Manjhi said in a statement on the outcome of bypolls in nine states in which BJP faced a drubbing.
"People who committed mistake by falling in illusion trap are on course of correction," he said pointing to voters distancing themselves from BJP in by-elections.
"We formed an alliance in Bihar to weaken those out to disturb communal harmony in the society. Today we see people working on the same line across the country... This is a golden opportunity for the nation," Manjhi said taking potshots at the BJP for its by-elections loss.
Grand alliance of JD(U), RJD and Congress had dealt a blow to the BJP in the by-elections to ten seats in Bihar last month winning six seats against four of the BJP.