The Sena decided to contest in 151 seats itself while 18 seats will be left to the remaining allies. The Mahadyuti or grand alliance comprising the BJP, Shiv Sena and others is favourite to return to power in the state after 15 years.
Addressing party workers, Thackeray said many faces have been unmasked during the polls, adding that Sena workers had given him an authority to take a decision and he would carry it out responsibly. He said he needed power in the state.
The BJP was also set to meet on Sunday afternoon in New Delhi where the Maharashtra leaders of the party would meet party chief Amit Shah. The BJP has refused to abide by the Shiv Sena's seat-sharing formula.
"There is a tug of war in the alliance. What is happening right before elections is unfortunate. Seat distribution is a complicated affair," Uddhav Thackeray said.
He also reminded Prime Minister Narendra Modi that Bal Thackeray, his late father and founder of the Sena, had supported him at the time of Gujarat riots in 2002.