More than 2,600 members of the Green Party registered to receive a vote on the programme for government by today's 1pm deadline.
Officials now have to check if each of the 2,627 applications came from a member with six-months standing.
If they are deemed to be a full-member, then they will receive a ballot paper by post.
There are currently 3,620 full and probationary members in the Green Party.
The Party's attention will now switch to an online 'special convention' on the programme for government which starts tomorrow lunchtime and is due to run for nine hours.
The Green Party is an all-Ireland party and the same rules regarding membership apply to both sides of the border.
Concerns were expressed yesterday by a number of Green Party members over the programme's commitment to climate action measures.
In Northern Ireland, the Green Party has two Assembly members, Clare Bailey (South Belfast) and its leader in Northern Ireland Rachel Woods, who represents the North Down constituency.
The pair and the party's deputy leader, Malachi O'Hara, who is a member of Belfast City Council, are not at this stage, making public whether they intend to support the deal.
One senior party figure said around 700 party members are entitled to vote on the issue.
Northern Ireland Green party sources also say that members began studying the programme for government documentation when they received it yesterday.
A former Northern Ireland Green party co-chair, John Barry, has tweeted that he will not be supporting the deal.
Mr Barry, who once served as a Councillor in Ards and North Down, described the proposed deal as "an unjust transition."
He has for many years actively supported the principle of the Greens being an all-island party.
The party's Northern Ireland members find themselves in a position where they could in theory provide 20-30% of the votes in the decision that will settle the government formation question in Dublin.
The support of two thirds of the overall vote is required to allow Green Party participation.
Ballot papers are being sent to members of all three party's today and it is expected the results will be announced on 26 June.
Meanwhile, Young Fine Gael has issued a statement rejecting the programme for government.
It said its National Executive met to consider the document and voted unanimously to instruct the three representatives on the Fine Gael Executive Council to vote against the deal.
In April, Young Fine Gael membership voted against entering into coalition with Fianna Fáil at a National Assembly.
Independent TDs still have not heard from the leaders of Fianna Fáil, Fine Gael and the Green Party about a promised briefing on the programme for government.
Reporting Paul Cunningham, Tommie Gorman