Six major social organisations and several student bodies have already decided to organise a 'Protest Day' on March 24 next on the issue, while the Mizo Students Union (MSU) has threatened to boycott the Lok Sabha elections.
State election department officials said that there were 11,390 Bru voters in the relief camps belonging to nine assembly constituencies covering three districts.
"The Brus migrated to Tripura on their own will and refused to return even after repeated appeals from the Centre, state government and the people of Mizoram," Lalbiakzuala said, adding that there was no reason why they should be repeatedly allowed to vote.
Lalhmachhuana, President of the Mizo Zirlai Pawl (MZP), also said that the Brus who refused to return to Mizoram despite several pleas and repatriation plans should be deleted from the Mizoram voters' lists.
Earlier, the EC allowed the Bru refugees to exercise their franchise on a directive of court in 1999.