Speaker Karu Jayasuriya is expected to announce his decision on the Opposition Leader today when the Parliament convenes for its second day.
There is a debate on the post of opposition leader since both the TNA and the UPFA faction which is against the national government are demanding it.
The TNA, which holds 16 seats in parliament, is demanding the post since the UNP and the SLFP came to an agreement to form a national government.
However, 55 UPFA MPs recently asked for the appointment of Kumara Welgama as the Opposition Leader.
The SLFP Central Committee recently gave approval to the MPs to sit in opposition if they wish to oppose the national government. Meanwhile, President Maithripala Sirisena recently agreed that the opposition MPs should decide on the Opposition Leader.