The Representation of the People Act 1983 (c. 2) is an act of the Parliament of the United Kingdom. It changed the British electoral process in the following ways:
The act also regulates how political parties and people acting on their behalf are to behave before and during an election.
The 1966 United Kingdom general election was held on Thursday 31 March 1966. The result was a landslide victory for the Labour Party led by Prime Minister Harold Wilson.
Wilson decided to call a snap election since his government, elected a mere 17 months previously, in 1964, had an unworkably small majority of only four MPs. The Labour government was returned following this snap election with a much larger majority of 98 seats. This was the last British general election in which the voting age was 21; Wilson's government passed an amendment to the Representation of the People Act in 1969 to include eligibility to vote at age 18, which was in place for the next general election in 1970.
The 1970 United Kingdom general election was held on Thursday 18 June 1970. It resulted in a surprise victory for the Conservative Party under leader Edward Heath, which defeated the governing Labour Party under Prime Minister Harold Wilson. The Liberal Party, under its new leader Jeremy Thorpe, lost half its seats. The Conservatives, including the Ulster Unionist Party (UUP), secured a majority of 30 seats. This general election was the first in which people could vote from the age of 18, after passage of the Representation of the People Act the previous year, and the first UK election in which party affiliations of candidates were put on the ballots.
Most opinion polls prior to the election indicated a comfortable Labour victory, and put Labour up to 12.4% ahead of the Conservatives. On election day, however, a late swing gave the Conservatives a 3.4% lead and ended almost six years of Labour government, although Wilson remained leader of the Labour Party in opposition. Writing in the aftermath of the election, the political scientist Richard Rose described the Conservative victory as "surprising" and noted a significant shift in votes between the two main parties. The Times journalist George Clark wrote that the election would be "remembered as the occasion when the people of the United Kingdom hurled the findings of the opinion polls back into the faces of the pollsters".