The Mayawati-led BSP will fight 20 of the 117 assembly seats in Punjab, while the rest will be contested by the SAD.
The Congress is banking on decisions like reducing electricity tariff and fuel prices, taken during current CM Charanjit Singh Channi's 111-day tenure.
Former Punjab chief minister Amarinder Singh on Friday hit out at the Congress for blaming the anti-incumbency of his four-and-half-years tenure for the poor show in assembly polls, saying the party's leadership will never learn.
The old alliance between the BJP and the SAD broke last year when the Shiromani Akali Dal quit the National Democratic Alliance over the farm laws.
A social activist, a young law graduate, a debutante, and an eye surgeon -- Punjab polls gave gave birth to a number of giant killers from the Aam Aadmi Party, who drubbed such stalwarts as Navjot Singh Sidhu, the Badals, and even Chief Minister Charanjit Singh Channi.
"Making a person belonging to Dalit caste as the chief minister of Punjab is nothing but an election stunt. I have come to know through the media today that assembly elections in Punjab will be fought under a non-Dalit leader and not under Channi," Mayawati told newspersons in Lucknow
Punjab's 117 assembly seats are going to be a keenly-watched contest with the Congress, the AAP, the SAD-BSP alliance, and the BJP-PLC-SAD (Sanyukt) battling to form the government in the state, with a probable entry of farmers' front in the form of Sanyukt Samaj Morcha.
Unemployment, delivery of justice in desecration cases, illegal sand mining and drug menace are likely to be key issues in the Punjab assembly elections.
After many years, intricate caste calculations will dominate politics in Punjab.
The incumbent Congress could win only 18 seats, with Chief Minister Charanjit Singh Channi losing both seats he contested -- Chamkaur Sahib as well as Bhadaur.
At many places, where the voters had entered booths before 6 pm and were standing in queues, they were allowed to cast their votes.
A recent pre-election survey suggests that AAP may win 53 seats in the 117-member Punjab assembly and reduce the Congress to just 43.