Sinn Féin says it will campaign public support for "an island-wide referendum on Irish unity, allowing the people to have their say".
The party also pledges to extend voting rights in presidential elections. There was no surprise to see these commitments in the party’s Election 2016 manifesto published today.
Conor McMorrow of RTÉ's political staff has taken a look at another of the party’s commitments for 'Citizens in a United Ireland'.
As well as the pledge for a referendum on Irish unity, Sinn Féin said it would "introduce Northern representation in the Dáil. Northern MPs should be automatically accorded membership of the Dáil, with consultative and speaking rights."
So how would this work? And would there be any realistic possibility of Unionist MPs from Northern Ireland going south of the border to Leinster House?
Sinn Féin leader Gerry Adams told RTÉ: "The inclusion of the Northern MPs in the Dáil is so that they would have speaking rights. They would not have voting rights.
"We actually had a commitment from Bertie Ahern on this, arising out of the Good Friday Agreement. And we had worked out the details of it all and then he welched on it. He said he didn’t get support for it from the other parties in the house."
Mr Adams added: "Will the unionists take up their seats? Eventually, yes, particularly if they are using it for their own advantage.
"There is a lot of invisible work being done in terms of cross-border bodies, the north south ministerial council where it is to the mutual advantage of everyone.
"A good, hard realistic and pragmatic approach is being taken by the unionist parties. Is this something that unionists would jump at? Probably not, initially. But I am from the North; I have no affinity with the parliament in London whatsoever.
"The people of west Belfast elected me over a very long time and they did so on the basis that I wouldn’t attend there. But they would love for their representative to attend Leinster House as would people from across the rest of the six counties."
And if the Unionist MPs decided to adopt an abstentionist policy on their Oireachtas seats - á la Sinn Féin in Westminster - could they take party allowances and expenses from the Dublin purse?
Mr Adams replied: "In terms of how we would work out people’s expenses. Clearly they would not have a salary but all of that could be worked out. There would be very small money involved."
Mr Adams pointed out that Mr Ahern could not get agreement on this proposal from the other parties. This could well be still the case.
By Conor McMorrow, RTÉ's Political Staff
