Talking to reporters, he said there has been no talks yet between the BJP and the Sena on government formation.
The Maharashtra chief minister will be from the Shiv Sena, he asserted.
"If Shiv Sena decides, it will get the required numbers to form a stable government in the state. People have given the mandate to form the government on basis of 50-50 formula that was pitched in front of people of Maharashtra," he said.
"If Uddhav Thackeray has said the Chief Minister will be from Shiv Sena, take it in writing that it will be from Shiv Sena," he added.
People have given mandate to form government on the basis of "50:50 formula" that was reached in front of the people of Maharashtra, Raut said.
In Maharashtra, BJP and Shiv-Sena have reached a standoff over the Chief Minister’s post, with BJP firm on Fadnavis’ name, while Sena demands for a rotational arrangement from both parties.
In the just-held state polls, the BJP won 105 seats, while the Sena got 56 in the 288-member assembly.
The Uddhav Thackeray-led party is demanding the post of Chief Minister for 2.5 years and 50:50 division of portfolios.
Both these demands have been rejected by the BJP which has insisted that Chief Minister Devendra Fadnavis will continue to hold the post for the next five years.