The SLFP is reportedly planning to seek suggestions in that regard from the constitutional steering committee.
So far, a draft constitution has not been formulated and holding a referendum will be decided as per a Supreme Court interpretation.
The foreign affairs minister told the UN recently that a referendum would be held on a new constitution, while cabinet spokesman Rajitha Senaratne has aired similar views.
Win or lose?
A specialist report submitted to the president has noted that winning at a referendum would not be possible at this juncture.
Academics in the joint opposition say even if defeated at a referendum, that could be passed by the north and the east, and that would allow the Tamil diaspora to tell the international community that the central government was against giving a fair solution for the Tamils.
Pointing to Ireland’s having demanded self-rule from Britain after voting against Brexit, they have told the president that people of the N-E could similarly demand an autonomous region for themselves.
Therefore, the talk about a referendum could be a conspiracy by the Tamil Diaspora, they said.
However, foreign minister Mangala Samaraweera has insisted that victory was certain at a referendum.
However, political analysts say a defeat is more likely as the government has so far failed to convince the masses about the need for a new constitution and also due to the prevailing economic woes.