The Republican Labour Party was a political party in Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

. It was founded in 1964, with two MPs at Stormont

Parliament of Northern Ireland

The Parliament of Northern Ireland was the home rule legislature of Northern Ireland, created under the Government of Ireland Act 1920, which sat from 7 June 1921 to 30 March 1972, when it was suspended...

, Harry Diamond

Harry Diamond

Harry Diamond was a socialist and an Irish nationalist. He was the MP for Belfast Falls in the Parliament of Northern Ireland, and later the leader of the Republican Labour Party....

 and Gerry Fitt

Gerry Fitt

Gerard Fitt, Baron Fitt was a politician in Northern Ireland. He was a founder and the first leader of the Social Democratic and Labour Party , a social democratic and Irish nationalist party.-Early years:...

. They had previously been the sole Northern Ireland representatives of the Socialist Republican Party

Socialist Republican Party (Ireland)

The Socialist Republican Party was an Irish republican political party in Northern Ireland. It was founded in 1944 by a coalition of former Nationalist Party members, former Irish Republican Army members and Protestant trade unionists around Victor Halley, all based in West Belfast.The party...

 and the Irish Labour Party respectively, so a common joke was that "two one-man parties had become one two-man party".

Fitt won the West Belfast

Belfast West (UK Parliament constituency)

Belfast West is a parliamentary constituency in the House of Commons of the United Kingdom.-Boundaries:The seat was restored in 1922 when as part of the establishment of the devolved Stormont Parliament for Northern Ireland, the number of MPs in the Westminster Parliament was drastically cut...

 seat in the UK general election of 1966

United Kingdom general election, 1966

The 1966 United Kingdom general election on 31 March 1966 was called by sitting Labour Prime Minister Harold Wilson. Wilson's decision to call an election turned on the fact that his government, elected a mere 17 months previously in 1964 had an unworkably small majority of only 4 MPs...

, and held it in the 1970 election

United Kingdom general election, 1970

The United Kingdom general election of 1970 was held on 18 June 1970, and resulted in a surprise victory for the Conservative Party under leader Edward Heath, who defeated the Labour Party under Harold Wilson. The election also saw the Liberal Party and its new leader Jeremy Thorpe lose half their...

.

In August 1970, Fitt left the party and took most of its support with him, to found the Social Democratic and Labour Party

Social Democratic and Labour Party

The Social Democratic and Labour Party is a social-democratic, Irish nationalist political party in Northern Ireland. Its basic party platform advocates Irish reunification, and the further devolution of powers while Northern Ireland remains part of the United Kingdom...

. Led by Paddy Kennedy, the rump party struggled on for a time, but it was wiped out in both the 1973 elections

Northern Ireland Assembly election, 1973

-Seats summary:-Source:* http://www.ark.ac.uk/elections/fa73.htm...

 to the Northern Ireland Assembly and the 1973 local elections

Northern Ireland local elections, 1973

Local government in Northern Ireland was reorganised in 1973 by the Local Government Act 1971 and the Local Government Act 1972...

and as a result was disbanded.