Lal Thanhawla, also state Congress chief, is contesting from two constituencies -Serchhip, his home turf, and neighbouring Hrangturzo - and opposition MNF chief Zoramthanga is trying his electoral fortunes from Tuipui East, bordering Myanmar.
The Mizoram poll was earlier scheduled for Dec 4 and the counting of votes was scheduled for Dec 8.
But the ECI rescheduled the dates following the request of the church and the local political parties to allow the voters to go to church Sunday and to celebrate a local festival.