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.