A committee has been formed to deliberate on the future course of action, including the modalities and structure of the proposed political entity, it said.
Among the national parties, the Congress, Aam Aadmi Party, the Bahujan Samaj Party and the Communist Party of India-Marxist opposed the proposal, while the Bharatiya Janata Party and the National People's Party supported it.
Nationalist Democratic Progressive Party's Hekhani Jakhalu and Salhoutuo Kruse created history on Thursday by becoming the first two women to be elected to the Nagaland assembly, officials said.
The three state assemblies have a strength of 60 members each.
The term of the three assemblies is ending on different dates in March.
The high-level committee on 'one nation, one election' approached 62 parties out which 47 responded -- 32 in support of holding elections simultaneously, 15 against it.
State BJP chief Temjen Imna Along, widely popular on social media across the country for his sense of humour, and Salhoutuonuo Kruse, one of the two women elected to Nagaland assembly for the first time, were among those who were sworn-in as members of the council of ministers.
Stakes are high for the Bharatiya Janata Party, as the results will signal if it has deepened its roots in Tripura, and made further inroads in Meghalaya and Nagaland, or if the Opposition has managed to dent its influence.
The Bharatiya Janata Party has released its manifesto for the upcoming Nagaland assembly elections, promising a special package for the eastern part of the state and establishment of a board for the holistic development of the region if the party returns to power for the second time in a row.
Sources from both parties said their legislators would hold a joint meeting with consensus leader Neiphiu Rio, the outgoing chief minister, before staking the claim to form the government.
Bihar Chief Minister Nitish Kumar's Janata Dal-United on Wednesday described as "high indiscipline" and "arbitrary" the support extended by its Nagaland unit to the newly formed government in that state where the Nationalist Democratic Progressive Party-Bharatiya Janata Party alliance returned to power.
The Nationalist Democratic Progressive Party (NDPP)-Bharatiya Janata Party alliance won 37 seats in Nagaland Assembly election, retaining the power in the state with Neiphiu Rio set to assume office as chief minister for a fifth consecutive term.
The Bharatiya Janata Party and its allies are well on the way to power in two north-eastern states, and is almost certain to be part of the ruling dispensation in the third.
Rio also appointed 24 MLAs as 'advisors' to various departments in his opposition less government.
A coalition government, led by National People's Party leader and outgoing chief minister Conrad Sangma, will be sworn-in on Tuesday morning in Meghalaya, while an all-party government, led by Nationalist Democratic Progressive Party (NDDP's) Neiphiu Rio will take oath later in the day in Nagaland.
This is the first time that Nagaland is witnessing the victory of so many political parties in the state assembly elections. LJP (Ram Vilas) and RPI (Athawale) are newbies in the state politics.
Sarma said no NDA partner will enter into any alliance with either Congress or the Trinamool Congress after the results are declared on Thursday.
Nagaland and Meghalaya BJP chief Temjen Imna Along and Ernest Mawrie, respectively also named party candidates approved by the party's central election committee.
The exit polls further pointed out that the northeastern state would have a hung house, with Sangma's National People's Party (NPP) emerging as the single-largest party.
Key states of Karnataka, Madhya Pradesh, Rajasthan, Chhattisgarh and Telangana would go for polls this year, besides states from the North-East.
The ruling Nationalist Democratic Progressive Party (NDPP) and the Bharatiya Janata Party are contesting the polls on a 40:20 seat-sharing basis.
Assembly speaker Sharingain Longkumer accepted the decision of the 21 NPF legislators to change party.
Polling for assembly polls is underway in Meghalaya and Nagaland, northeastern states the Bharatiya Janata Party rules in alliance with regional powers.
Acharya said he has asked Rio to submit signatures of all the 32 MLAs supporting him by Monday.
Apart from the 18 members of the ruling National Democratic Alliance (NDA), including the Bharatiya Janata Party, seven non-National Democratic Alliance parties will attend the ceremony, going by their stated position on the issue which has snowballed into another political flashpoint between the ruling and opposition camps.
The winning momentum is important for the BJP as the crucial state of Karnataka is next headed for assembly polls, expected in May, followed by Madhya Pradesh, Rajasthan, Chhattisgarh, Telangana and Mizoram later this year.
Stakes are high for the Bharatiya Janata Party ahead of the counting of votes on Thursday for three state assembly polls, as the results will signal if it has deepened its roots in Tripura, a Left bastion captured by the party in 2018, and made further inroads in Meghalaya and Nagaland, or if the opposition has managed to dent its influence.
Rio is heading the 'People's Democratic Alliance' government in partnership with the Bharatiya Janata Party in the state.
The total income of national and regional parties from unknown sources for 2020-21 stands at Rs 690.67 crore.
A bench of Justices SK Kaul and Sudhanshu Dhulia said the Centre cannot preclude reservation from being extended to women in civic bodies by saying it doesn't apply to tribal areas.
The 'Angh' of Oting, Tahwang, is contesting the February 27 assembly polls on a Naga People's Front (NPF) ticket against the incumbent Bharatiya Janata Party MLA P Paiwang Konyak, who is a cabinet minister in the outgoing government.
The septuagenarian leader has with this victory, broken the record of veteran leader SC Jamir, who helmed the northeastern state thrice.
However, the AICC general secretary Jairam Ramesh said the SC committee has limited terms of reference and 'cannot bring out the deep nexus between' the prime minister and the billionaire businessman.
Acharya, in a letter to Rio, asked him to prove his majority on the floor of the House on or before March 16, the source said.
In a letter to Murmu, Stalin said that Ravi has violated the oath of office he took under Article 159 of the Constitution, the government said in an official release.
The ruling Bharatiya Janata Party managed to notch up a morale-boosting win on its 'Mission Northeast' on Thursday by retaining Tripura emphatically, despite anti-incumbency and newcomer Tipra Motha playing spoilers to its party, while also piggy-backing to power in Nagaland on Neiphiu Rio-led NDPP's shoulder.
Uncertain political times in Meghalaya, Nagaland, Tripura.
Here's how the prominent leaders in the fray in Tripura, Meghalaya and Nagaland performed.
'Earlier, a lot of fear was in the minds of people that the BJP is anti-Christian and anti-minority, but over the years people have learnt to accept that the BJP is just another national party.'
The JD-U legislator from Satakha and Independent MLA Tongpang Ozukum have announced that they will join the BJP-NDPP alliance, taking its tally to the magic figure of 31.