India's Congress party is trailing in the fourth place as votes are being counted in the politically crucial state of Uttar Pradesh.
Congress also looks set to lose in Punjab, while it is engaged in a neck-and-neck contest in Uttarakhand state.
Manipur and Goa are the other states where counting is going on.
The state polls are seen as a litmus test ahead of the national elections in 2014.
They are also seen as a test for the Congress party-led central government, whose credibility has been eroded in the past few months due to a series of corruption allegations.