"Whatever happens, the next chief minister would be Sena president Uddhav Thackeray," said party spokesperson and MP Sanjay Raut as the results started pouring in.
"In politics, we cannot disclose all the cards right now. We shall make our stand clear this evening," Raut added.
This could put a dampener on ex-ally BJP's efforts to reach out to them. The BJP appeared set to be the single largest party, with majority in the Assembly polls.
In the 288-seat assembly, where 144 is the magic halfway number, the BJP+ was leading in 114 seats while the Shiv Sena was second with 50 seats.