of Hayes and Harlington voted 58.25% leave versus 41.75% to remain; this is in contrast to the public stance of incumbent MP, John McDonnell, at the time of the referendum. History The seat since its 1950 creation has in most elections been quite heavily Labour-voting in relative terms (as with its predecessor in the post war years). In 1981 its Labour MP, Neville Sandelson, defected to the now Liberal-merged Social Democratic Party. Sandelson stood for election for the new party in 1983 which led to a three-way split in the vote which enabled Conservative Terry Dicks to gain the seat in 1983 and retain it in the next two General Elections on marginal majorities (in 1992 being only 53 votes). In 1997, the seat swung heavily back to the Labour candidate McDonnell with his +17.5% swing exceeding that nationally (10% average swing). McDonnell's majorities have ranged between 21.1% and 41.6% of the votes cast. Members of Parliament Election results Elections in the 2010s Elections in the 2000s Elections in the 1990s Elections in the 1980s Elections in the 1970s Elections in the 1960s Elections in the 1950s See also List of parliamentary constituencies in London Notes References External links Politics Resources (Election results from 1922 onwards) Electoral Calculus (Election results from 1955 onwards) Politics of the London Borough of Hillingdon Parliamentary constituencies in London Constituencies of the Parliament of the United Kingdom established in 1950