At least four exit polls predicted the Congress will be able to wrest power from the BJP in the western state of Rajasthan.
Prime Minister Narendra Modi and his party's popularity is in doubt as exit polls for elections that ended Friday in five states showed inconclusive projections before general elections next year.
At least four exit polls predicted the Congress will be able to wrest power from the BJP in the western state of Rajasthan. In Telangana in the south, regional party Telangana Rashtra Samithi will retain power, the polls show. One exit poll predicted the Congress and a regional party are in a tight race for the northeastern state of Mizoram. The winners will be declared when ballots are counted on Tuesday.
Modi, who won the biggest electoral mandate in three decades, may struggle to replicate his 2014 victory as recent opinion polls suggest his standing in the electorate appears to be weakening. A loss in Madhya Pradesh and Chhattisgarh will expose Modi's vulnerability.
The BJP is trying to retain power for a fourth term in Madhya Pradesh and Chhattisgarh and for a second time in Rajasthan. The Telangana Rashtra Samithi, which is in the running for a second term in Telangana, is facing a tough challenge from a Congress-led alliance.
A better result for the Congress will be a morale booster for the main opposition party. It will help to boost Congress President Rahul Gandhi's political weight in federal elections that are likely to take place in April.