The highest turnout of 78.89 per cent was in the four constituencies in West Bengal, which has a total of 39 seats, while the lowest was recorded in Madhya Pradesh at 54 per cent.
In the key battleground state of Karnataka, where polling was held in the all the 28 seats today, the voting percentage was 66 per cent and in the 11 seats of Uttar Pradesh, electorally the most important state, the turnout was 62.52 per cent.
Congress had defeated BJP in last year's state assembly polls, bringing to an end the saffron party's only power centre in southern India.
Bangalore watched one of the keenly contested seats in the state where Congress party candidate Nandan Nilekani is pitted against BJP veteran Ananth Kumar.
Polling in another important, Maharashtra, which has a total of 48 seats, 19 constituencies which went to poll today saw a turnout of 61.7 per cent.