Unionist Party of Northern Ireland ended in 1981.
The Ulster Unionist Party. It is a political party in Northern Ireland.
The Democratic Unionist Party is confined to Northern Ireland, and is a right-wing party that wishes Northern Ireland to remain a part of the UK. Most of it's members are traditionalist Anglicans or Presbyterians, who would not support same-sex marriage.
As of the 8th of April 2015, it is the Democratic Unionist Party.
Green Party in Northern Ireland was created in 1983.
Communist Party of Northern Ireland was created in 1941.
Northern Ireland Labour Party was created in 1987.
Labour Party of Northern Ireland was created in 1985.
The main parties in the Northern Ireland Assembly are:The Democratic Unionist PartySinn FéinThe Ulster Unionist PartyThe Social Democratic and Labour PartyThe Alliance Party
United Labour Party - Northern Ireland - was created in 1978.
Alliance Party of Northern Ireland was created on 1970-04-21.
National Democratic Party - Northern Ireland - was created in 1965.