"Yah to aap log bol rahe hai (you are saying this)," Kumar told reporters in reply to repeated questions on exit polls projection in Bihar.
He said "Lets wait for the results on May 16." Exit poll projections are predicting around five out of 40 seats for JD(U) and between 20 to 25 for the BJP.
Former deputy chief minister Sushil Kumar Modi refused to comment on the exit polls.
Congress state president Ashok Choudhary too disagreed with the projections.
"When the results will come out on May 16, the scene will be different and Congress-RJD will perform handsomely," he said.
The PCC chief said that his party benefited from the alliance with Lalu Prasad.
"Had the alliance come a little before the results would have been even more impressive for the UPA in Bihar," he added.