Dushyant Chautala is being entitled as the kingmaker in case of a close fight of Haryana's throne.
The BJP was ahead in 40 of 90 seats while the Congress led in 30 seats, making the contest wide open in Haryana.
Reports suggest Congress's Deependra Hooda and Mr Chautala had a meeting last evening.
"These are just leads...the results will take time. The picture will be clearer later," said Naveen Kumar, BJP spokesperson.
While most exit polls projected a comfortable victory for the BJP, few predicted a stricking fight between the BJP and Congress with the JJP emerging as kingmaker.