Shiv Sena is demanding rotational chief ministership (File)

The BJP-Shiv Sena standoff over power-sharing in Maharashtra, which has stalled government formation for over a week, took a dramatic turn on Friday with reports emerging of Sena chief Uddhav Thackeray talking to Sharad Pawar, the opposition stalwart who can facilitate a reconfiguration of alliances.

Reports suggest Uddhav Thackeray and the Nationalist Congress Party (NCP) leader have spoken on the phone. Sharad Pawar, say sources, will fly to Delhi to meet with Congress president Sonia Gandhi.

These reports have contributed significantly to speculation that the Shiv Sena has sent feelers to the NCP-Congress combine, upset with its ally BJP for not accepting its demand for rotational chief ministership and a "50:50" deal for power sharing.

Buzz about the Sena flirting with its rival became louder when its leader Sanjay Raut met with Mr Pawar last afternoon.

"If the Shiv Sena decides, it will get the required numbers to form stable government in the state. People have given the mandate to form government on basis of the 50-50 formula that was reached in front of people of Maharashtra. They want a chief minister from the Shiv Sena," Sanjay Raut told reporters on Friday.

"There is no ultimatum to the BJP. They are big people," the Rajya Sabha MP added. He also delivered a message through a tweet without naming the BJP: "Sahib, don't feed your arrogance...many Alexanders have drowned in the ocean of time...."

The BJP won 105 of the state's 288 seats and the Sena finished with 56 in the state election last week. Together, they are comfortably past the 145-majority mark. Mr Pawar's NCP placed third in the Maharashtra election with 54 seats, just two behind the Shiv Sena. The Congress won 44.

The BJP and Sena's ties, mended just before the state election after a long period of bitterness, soured again when Uddhav Thackeray brought up the "50:50 arrangement" he said was discussed before the national election earlier this year.

"It is time to remind the BJP about the formula arrived at when BJP chief Amit Shah visited my home. We had decided on a 50:50 formula," Uddhav Thackeray told the media on October 24, the day of the Maharashtra poll results.

With the BJP ending up with fewer seats than in the 2014 state election, the Sena believes it deserves an equal timeshare in power, which means two-and-a-half years for a chief minister from each party.

The BJP's Chief Minister Devendra Fadnavis, who is eyeing another full term, has denied such a deal. On Thursday, Uddhav Thackeray reportedly told his party MLAs he was disappointed with Mr Fadnavis's stand.

Earlier this week, the Sena and the BJP held separate meetings with Governor Bhagat Singh Koshyari, calling them courtesy visits for Diwali greetings.

Yesterday, Uddhav Thackeray's son Aaditya Thackeray led another delegation of MLAs in a meeting with the Governor. This time, it was on farmers' issues, he said.

The NCP has declared that the people's mandate is for the party to sit in the opposition, along with ally Congress and other parties.

That clarification came after reports that the NCP had conveyed to the Sena its willingness to support it in a new political configuration to keep the BJP out of power.

Mr Pawar has backed the Sena's demand. "In the 1990s also, there was a 50-50 formula for the Shiv Sena and the BJP. So they have past experience (in running the government). So the Sena can insist, nothing wrong in that," Mr Pawar had said in an interview with NDTV.

On Friday, Mr Pawar's daughter Supriya Sule, an NCP MP, said on Mr Fadnavis: "I have known him for many years. The way he is insisting that only he will be chief minister...This new arrogance is surprising..."