Other signatories to the declaration include the Congress, Nationalist Congress Party, Janata Dal-United, Lok Janshakti Party, Aam Aadmi Party, Nagaland Democratic People's Party, Nagaland Congress, United Naga Democratic Party and the National People's Party.
Elections to the Nagaland Assembly to re-constitute the 60-member House is slated to be held on February 27, counting of votes on March 3 and the entire poll process is scheduled to be completed on March 5.
After a meeting with the Core Committee on Sunday, Naga separatists had issued a joint statement warning persons planning to contest the Nagaland Assembly polls and asking them not to sabotage the historical talks by taking part in the electoral processes.
The separatist National Socialist Council of Nagalim-Issac Muivah, which had signed the Framework Agreement to end Naga insurgency in August 2015 with the central government, had claimed that the decision to hold elections was bound to undermine the progress in the ongoing parleys.
In 2017, the Centre signed an agreement with a working committee comprising six Naga national political groups (Naga rebel factions).
On Saturday, the Core Committee had also written to Chief Election Commissioner OP Rawat, appealing to him to defer February 27 elections in favour of the early solution to the protracted Naga insurgency issue.
"The opportunity for a peaceful resolution of the Naga political issue has never been this favourable, as the political negotiations are in advance stage and we can't afford to distract the focus from the (peace talks) process at any cost," the Committee had said in a letter to Rawat.