Chief Minister of Mizoram Lal Thanhawla, who is contesting from two seats, could not file his nomination papers in Serchhip as agitators demanding the removal of the state chief electoral officer continued their protest in front of the office of the returning officer.

The chief minister had to change his plan to file nomination in his home turf on Tuesday considering the situation around the deputy commissioner's office which also houses the office of the returning officer.

The last date for filing of nomination papers is November 9. The tenure of the present 40-member Assembly in Mizoram, the only Congress-ruled state in the north-eastern region, expires on December 15. Elections will be held in Mizoram on November 28.