The 1962 Stockton-on-Tees by-election was a parliamentary by-election held for the House of Commons constituency of Stockton-on-Tees in County Durham on 5 April 1962. It was the by-election at which Bill Rodgers, a future Cabinet minister and member of the "Gang of Four" of senior Labour politicians who defected to form the SDP, entered Parliament. Rodgers subsequently helped to lead the SDP into the merger that formed the Liberal Democrats, and later served as that party's leader in the House of Lords. In the circumstances it is not without irony that Rodgers remembers future Liberal leader David Steel, then not yet a Member of Parliament (MP), loudly booing the result of the election at Stockton from the floor of the count.^[1]

The by-election was caused by the resignation of the sitting Labour MP, George Chetwynd to take up the post of Director of the North East Development Council.

Rodgers spent time attacking the Conservative government of Harold Macmillan. Macmillan was a former MP for Stockton-on-Tees and returned to the constituency to campaign for Coles, the first time since before the Second World War that a serving prime minister had been seen on the streets of by-election supporting his party's candidate.^[9] Rodgers' principal weapon of attack was the unemployment figures which had been steadily increasing over the past months and stood at 5% at the time of the by-election.^[10] The Conservative and Liberal candidates spent much of their time engaging in argument over whether Blackpool North and Orpington were flashes in the pan or the manifestation of something more permanent in British politics.^[11] However Macmillan concentrated on Britain's application to enter the Common Market in his speech to a packed crowd at Stockton's Maison de Danse.^[12] Indications were that this was not a popular or resonant issue with the voters who were unhappy about the treatment of pensioners and the government's imposed pay pause. They also felt a general desire for a change with the government having been in office since 1951.^[13]

On a turnout of 81%, Rodgers easily held the seat for Labour with an increased majority, which he had confidently predicted from the outset of the campaign.^[14] Despite all their hopes the Liberals did not quite beat the Conservative candidate into third place, failing by just 390 votes to capture second place but Stockton-on-Tees was one of series of by-elections at this time in which Liberal performance was improving and where the Conservative share of poll reduced.^[15] This culminated in the by-election at Leicester North East on 12 July 1962 when the Conservatives did fall into third place behind the Liberals. As a consequence, Macmillan reshuffled his cabinet removing seven ministers, including Chancellor of the Exchequer, Selwyn Lloyd who was held responsible for the unpopularity of the pay pause policy. This mass removal of ministers, referred to as 'the night of the long knives', smacked of desperation and caused many people to question Macmillan's political judgment.^[16] It also led to one of the best political quotations of the era from future Liberal leader Jeremy Thorpe when he commented: "Greater love hath no man than this, that he lay down his friends for his life".^[17]

• Lists of United Kingdom by-elections
• United Kingdom by-election records