Mizoram's lone Lok Sabha constituency this time is seeing a triangular battle between sitting member C.L. Ruala of the Congress, Robert Romawia Royte of the United Democratic Front (UDF) and M. Lalmanzuala of the Aam Aadmi Party.
The main opposition UDF is an alliance of eight parties led by the Mizo National Front (MNF), which ruled the state for two terms (1998-2003 and 2003-08). The UDF is supported by the Bharatiya Janata Party (BJP).
The MNF had won the Lok Sabha seat, reserved for tribals, in 2004.
The by-election for the Hrangturzo assembly seat is also being held Friday. The by-election was necessitated after Chief Minister Lal Thanhawla, who won from two constituencies in the assembly polls held Nov 25, vacated the seat.
Vanlalawmpuii Chawngthu of the Congress is pitted against UDF leader H. Lalduhawma, who unsuccessfully contested the last election from the same seat.