Irish Parliamentary Party in the context of "Partition of Ireland"

Charles Stewart Parnell (27 June 1846 – 6 October 1891) was an Irish nationalist politician who served as a Member of Parliament (MP) in the United Kingdom from 1875 to 1891, Leader of the Home Rule League from 1880 to 1882, and then of the Irish Parliamentary Party from 1882 to 1891, who held the balance of power in the House of Commons during the Home Rule debates of 1885–1886. He fell from power following revelations of a long-term affair, and died at age 45.

Born into a powerful Anglo-Irish Protestant landowning family in County Wicklow, he was a land reform agitator and founder of the Irish National Land League in 1879. He became leader of the Home Rule League, operating independently of the Liberal Party, winning great influence by his balancing of constitutional, radical, and economic issues, and by his skilful use of parliamentary procedure.

The Home Rule movement (Irish: Rialtas Dúchais) was a movement that campaigned for self-government (or "home rule") for Ireland within the United Kingdom of Great Britain and Ireland. It was the dominant political movement of Irish nationalism from 1870 to the end of World War I.

Isaac Butt founded the Home Government Association in 1870. This was succeeded in 1873 by the Home Rule League, and in 1882 by the Irish Parliamentary Party. These organisations campaigned for home rule. The House of Commons of the United Kingdom introduced the First Home Rule Bill in 1886, but the bill was defeated in the House of Commons after a split in the Liberal Party. After Parnell's death, Gladstone introduced the Second Home Rule Bill in 1893; it passed the Commons but was defeated in the House of Lords. After the removal of the Lords' veto in 1911, the Third Home Rule Bill was introduced in 1912, leading to the Home Rule Crisis. Shortly after the outbreak of World War I it was enacted, but implementation was suspended until the conclusion of the war.

The revolutionary period in Irish history was the period in the 1910s and early 1920s when Irish nationalist opinion shifted from the Home Rule-supporting Irish Parliamentary Party to the republican Sinn Féin movement. There were several waves of civil unrest linked to Ulster loyalism, trade unionism, and physical force republicanism, leading to the Irish War of Independence, the Partition of Ireland, the creation of the Irish Free State, and the Irish Civil War.

Some modern historians define the revolutionary period as the period from the introduction of the Third Home Rule Bill to the end of the Civil War (1912/1913 to 1923), or sometimes more narrowly as the period from the Easter Rising to the end of the War of Independence or the Civil War (1916 to 1921/1923).

The 1906 United Kingdom general election was held from 12 January to 8 February 1906. The Liberals under Henry Campbell-Bannerman won a landslide victory against a bewildered Conservative Party, in which its leader, Arthur Balfour, lost his seat; the party won the lowest number of seats it ever had in its history, a nadir unsurpassed until 2024. This particular landslide is now ranked alongside the 1924, 1931, 1945, 1983, 1997, 2001, and 2024 general elections as one of the largest landslide election victories.

The Labour Representation Committee was far more successful than at the 1900 general election and after the election would be renamed the Labour Party with 29 MPs and Keir Hardie as leader. The Irish Parliamentary Party, led by John Redmond, achieved its seats with a relatively low number of votes, as 73 candidates stood unopposed. This election was a landslide defeat for the Conservative Party and their Liberal Unionist allies, with the primary reason given by historians being the party's weakness after its split over the issue of free trade (Joseph Chamberlain had resigned from government in September 1903 in order to campaign for Tariff Reform, which would allow "preferential tariffs"). Many working-class people at the time saw this as a threat to the price of food, hence the debate was nicknamed "Big Loaf, Little Loaf". The Liberals' landslide victory of 125 seats over all other parties led to the passing of social legislation known as the Liberal reforms.

The Irish component of the 1918 United Kingdom general election took place on 14 December 1918. It was the final United Kingdom general election to be held throughout Ireland, as the next election would happen following Irish independence. It is a key moment in modern Irish history, seeing the overwhelming defeat of the moderate nationalist Irish Parliamentary Party (IPP), which had dominated the Irish political landscape since the 1880s, and a landslide victory for the radical Sinn Féin party. Sinn Féin had never previously stood in a general election, but had won six seats in by-elections in 1917–1918. The party had vowed in its manifesto to establish an independent Irish Republic. In Ulster, however, the Unionist Party was the most successful party.

In the aftermath of the elections, Sinn Féin's elected members refused to attend the British Parliament in Westminster (London), and instead formed a parliament in Dublin, the First Dáil Éireann ("Assembly of Ireland"), which declared Irish independence as a republic. The Irish War of Independence was conducted under this revolutionary government which sought international recognition, and set about the process of state-building. The other parties elected in the election were invited by Sinn Féin to join in creating the Dáil Éireann, but declined and took up their seats at Westminster.

The Irish Republican Brotherhood (IRB; Irish: Bráithreachas Phoblacht na hÉireann) was a secret oath-bound fraternal organisation dedicated to the establishment of an "independent democratic republic" in Ireland between 1858 and 1924. Its counterpart in the United States of America and Canada was initially the Fenian Brotherhood, but from the 1870s it was Clan na Gael. The members of both wings of the movement are often referred to as "Fenians". The IRB played an important role in the history of Ireland, as the chief advocate of republicanism during the campaign for Ireland's independence from the United Kingdom, successor to movements such as the United Irishmen of the 1790s and the Young Irelanders of the 1840s.

As part of the New Departure of the 1870s–80s, IRB members attempted to democratise the Home Rule League and its successor, the Irish Parliamentary Party, as well as taking part in the Land War. The IRB staged the Easter Rising in 1916, which led to the establishment of the first Dáil Éireann in 1919. The suppression of Dáil Éireann precipitated the Irish War of Independence and the signing of the Anglo-Irish Treaty in 1921, ultimately leading to the establishment of the Irish Free State, which excluded the territory of Northern Ireland.