"With the assembly session set to begin tomorrow, the order by the Speaker (P Dhanapal) suspending the MLAs has left only its leader Vijayakant to take part in the proceedings", he said in a statement.
Considering that it may not be "democratic" to conduct an Assembly session without the main opposition party, he urged the Speaker to cancel the suspension of the six MLAs so that they could take part in the session.
The Speaker had described the incident as a "historic low" in the annals of the state Assembly.
Earlier during the budget session in March, DMDK MLAs including Vijayakant, wore black shirts and protested in front of the Chief Minister's Cell urging Speaker to allow them to take part in the House proceedings.