"For the first time after a long spell of 25 years, the state will get a single-party government which will be formed by BJP. The party will win more than 180 seats on its own out of 257 seats it is contesting for the October 15 elections," Rudy told a press conference.
Maharashtra Assembly has 288 seats.
BJP, which last week severed ties with its alliance partner of 25-years, Shiv Sena, over disagreement on sharing of seats, is facing elections along with four smaller allies which were part of the erstwhile 'Mahayuti' (grand alliance).
Ruling out a split of votes, Rudy said that the BJP would not like to comment on the past developments which led to breaking of its alliance with Sena.
Responding to a query, Rudy, who is BJP's observer for Maharashtra, said, "Earlier there were reports that Shiv Sena's lone minister in the union cabinet Anant Geete will resign, but the Sena chief Uddhav Thackeray has now clarified that his party will not pull out of NDA government at Centre."
Rudy said that BJP national president Amit Shah will release the election manifesto on October 3, "which includes a vision for developing Maharashtra into a most advanced state with higher industrial growth."
BJP's former partner Sena is a staunch supporter of united Maharashtra and opposed to bifurcation of the state.
Rudy said that Prime Minister Narendra Modi would be addressing around 22 to 24 elections meetings across the state between October 4 and 13. "The final details are being worked out when he returns from USA tomorrow," he said.