The Congress has won 66 seats and is leading in two more in the 90-member Assembly, while the BJP has been relegated to a distant second spot, winning just 15 seats, according to the results available at 5.30 am on Wednesday.
The Mayawati-led Bahujan Samaj Party (BSP) has won two seats, while the Janta Congress Chhattisgarh (J) of former chief minister Ajit Jogi has won five. The two parties fought the polls in an alliance.
After it became clear that the Congress was heading for a massive victory, Chief Minister Raman Singh submitted his resignation to the governor.