The trust vote will be sought on November 12 after all the newly elected MLAs take oath. The protem Speaker will be elected on November 10, according to sources in the Chief Minister's office.
Governor C Vidyasagar Rao has given Chief Minister Fadnavis 15 days from the day of swearing-in of his government to prove its majority in the 288-member House.
After the death of an MLA, BJP's strength in the Assembly has come down to 121, but it has claimed support of all seven independents and six others from smaller parties.
If Sena comes on board, the BJP government will have no problem proving its majority in the House.