At some of the polling stations, technical trouble with electronic voting machines (EVM) disrupted the process for brief periods.
The main poll battle is between the ruling Congress and opposition coalition Mizoram Democratic Alliance, comprising Mizo National Front (MNF), Mizoram People's Conference and Maraland Democratic Front, all regional and local parties.
The Bharatiya Janata Party, which has little base in the state, Zoram Nationalist Party and the Nationalist Congress Party are also separately contesting the state elections, fielding candidates in many seats.
Of the 40 assembly seats, 39 are reserved for tribals. One seat is for the general category.