The sudden move came on a day when NCP chief Sharad Pawar reiterated his party's decision to extend outside support to the Devendra Fadnavis government during the crucial trust vote on November 12.
A letter from Sena chief Uddhav Thackeray seeking the post of Leader of Opposition for its Legislature Party leader Eknath Shinde was delivered to the state Assembly Secretary Anant Kalse, party spokesperson Neelam Gorhe told reporters.
"Since we are the second largest party in the House with 63 MLAs, it is appropriate to appoint our leader as Leader of Opposition. We expect Shinde's name to be announced as early as possible," she said.
After boycotting the first expansion of the Union Council of Ministers and recalling Rajya Sabha member Anil Desai, who too was to be sworn-in as a minister yesterday, from Delhi airport, Uddhav had last evening served an ultimatum to BJP asking it to make clear its stand on taking NCP's support to bail out the government in Maharashtra.
As Pawar, whose party has 41 MLAs in the Assembly, held forth on the reason for extending outside support to the Fadnavis government at a news conference, Sena, apparently peeved at lack of response from BJP to its ultimatum, made up its mind to occupy the space of the main Opposition party.