Belfast faces the possibility of losing one of its four House of Commons seats under a review of Northern Ireland's 18 Westminster constituencies today.
Sinn Féin president Mr Gerry Adams, Ulster Unionist veteran the Reverend Martin Smyth and Democratic Unionist MPs Mr Peter Robinson and Mr Nigel Dodds will anxiously await the findings of the Boundary Commission for Northern Ireland.
Belfast's four constituencies are believed to be the most likely to be affected by any boundary changes because of shifts in population to constituencies outside the city.
According to the latest figures, Rev Smyth's South Belfast seat is the smallest constituency in the North, with 50,599 on the electoral register - down 17 per cent on the electoral quota of 60,969.
Mr Adams's West Belfast constituency was the second smallest with 50,870 voters, while the North and East Belfast constituencies were third- and fourth-smallest, with 51,422 and 51,899 voters, respectively. West Tyrone, North Down, East Derry and East Antrim are also below the quota.
The North Antrim constituency of DUP leader Reverend Ian Paisley is the biggest in Northern Ireland, with 70,582 voters - exceeding the quota by 15.8 per cent.
Under the Parliamentary Constituencies Act 1986, Northern Ireland cannot have more than 18 Westminster constituencies or fewer than 16. The Boundary Commission is expected to outline later this year whether it thinks there should be a reduction in the number of seats.