Thanhawla was likely to form the new Congress government in Mizoram earliest by Friday, sources in the Chief Minister's Office said today.
The five-day national mourning as a mark of respect to South African leader Nelson Mandela was one of the reasons for the delayed swearing-in ceremony, the sources said.
Lal Thanhawla, all set for a fifth term, won from both Serchhip and Hrangturzo seats, he contested.He was elected to the Assembly for a record ninth time since 1978.
Repoll for Lawngtlai East seat would be held tomorrow and counting would be done on Thursday.
The opposition Mizoram Democratic Alliance (MDA), a pre-poll alliance formed by the main opposition Mizo National Front (MNF), Mizoram People's Conference (MPC) and the Maraland Democratic Front (MDF) won six seats (MNF 5 and MPC one).