The 1955 United Kingdom general election was held on 26 May 1955, four years after the previous general election. It resulted in a substantially increased majority of 60 for the Conservative government under new leader and prime minister Sir Anthony Eden against the Labour Party, then in their 20th year of leadership by Clement Attlee. Boundary changes however make a direct comparison with 1951 impossible.
This election has been described by many since as one of the "dullest" post war elections, because there was little change in the country, with Labour steadily losing ground owing to infighting. This was due to Nye Bevan, who had initiated a split in the party between the left (Bevanites) and the right (Gaitskellites). This resulted in an unclear election message from the Labour party. It would also be the 5th and last election fought by Labour leader Clement Attlee, who by this time was 72. Eden had only just become leader of the Conservative party a few weeks before the election, after the retirement of Winston Churchill. Despite this however Eden had for some time been considered the natural heir apparent to the Conservative leadership. For the first time television took a prominent role in the campaign. The Conservatives were hoping to take advantage of the end of food rationing and the good mood created by the recent coronation of Queen Elizabeth. Eden himself was telegenic, although not a great public speaker, and gradual economic growth benefited the party greatly. However, it would prove to be the last time the Conservatives won the most seats in Scotland; after 1959, Labour established itself as the dominant party in the country at UK general elections, a feat it maintains to the present day.
This was the earliest general election in the United Kingdom of which television coverage survives (the 1950 and 1951 election nights were not recorded). Only three hours of the coverage presented by Richard Dimbleby was kept and this was rebroadcast on BBC Parliament on the fiftieth anniversary of the date.
On election day, the Daily Mirror had printed the front page headline "Don't Let The Tories Cheat Our Children", urging its readers to elect Labour on the basis that it had "built a better Britain for us all".
This election was fought on new boundaries, with 5 seats added to the 625 in 1951.
The result saw very little change from 1951, with fewer than 25 seats changing hands and only a small swing from Labour to the Conservatives. The only real highlight of the night being in Northern Ireland, where Sinn Féin won 2 seats in a British election for the first time since 1918 (before the partition of Ireland). Despite deep divisions in the Labour party, the election was not the disaster it could have been. Although little changed, this was a strong victory for the Conservatives, who won the largest share of the vote for a single party in a post war general election.