Besides the 105 members, the BJP has claimed the support of several Independents and smaller parties, though the exact figures are not clear and it is not known whether these would be sufficient to achieve the simple majority of 145 in the 288-member Assembly.
The BJP in Maharashtra has been invited by the Governor to form government and prove its majority on Monday.
Maharashtra Governor Bhagat Singh Koshyari on November 9 asked the Bharatiya Janata Party (BJP) to "indicate willingness and ability" to form government in the state, creating hope that the 15-day-long political impasse in the state will end.
He was responding to a question about the Congress possibly extending support to the Shiv Sena to form a government and said the Sonia Gandhi-led party is "not enemy of Maharashtra".
With the BJP backing off from the race, the onus to form government now rests with the Sena, which has indicated that it might rope in the Congress and the NCP to prop up a government.
Announcing the BJP's decision, Maharashtra BJP president Chandrakant Patil accused the Uddhav Thackeray-led party, which is adamant on its demand for a rotational chief ministership, of "disrespecting" the popular mandate secured by the BJP and the Sena in recent assembly polls. No one from the BJP ever targeted Bal Thackeray (Sena founder) or Uddhav Thackeray.
Addressing the media, Mr Fadnavis delivered his strongest statement against the Shiv Sena since 2014, when he took over as Chief Minister.
Devendra Fadnavis during a press conference on Friday.
Mumbai: Shiv Sena leader Sanjay Raut on Sunday hit out at Maharashtra's caretaker chief minister Devendra Fadnavis and accused him of playing politics of fear, while making a reference to German dictator Adolf Hitler in the backdrop of logjam over government formation in the state.
NCP leader said, "The deadlock in Maharashtra has brought the political scenario at a point where if we don't agree for some arrangements, some understandings among parties, the only result would be re-elections, which certainly nobody wants, even the people do not want that". "I don't think MLAs of any party would defect. The Shiv Sena will declare its strategy if no one else is able to form the government".
Devendra Fadnavis is the legislature party leader of the BJP, which emerged as the single largest party in Maharashtra after the Assembly Election.