Islington North () is a constituency in Greater London represented in the House of Commons of the UK Parliament since 1983 by Jeremy Corbyn, who was Leader of the Labour Party and Leader of the Opposition from 2015 to 2020. The constituency was established for the 1885 general election. Constituency profile The seat includes the densely populated and multicultural suburbs of Finsbury Park, Canonbury, Highbury and the northern part of Holloway. Despite high incomes and house prices, there is also more deprivation than the UK average. Political history The constituency has elected a Labour Party candidate at each election since a by-election in 1937. Since then the smallest majority was 10.4% of the vote, in a by-election in 1969, on a very low turnout. The MP since 1983, Jeremy Corbyn, had his smallest majority (15.3%) in 1983 and his largest (60.5%) in 2017. In the ten elections during Corbyn began representing the constituency, the Conservatives have finished in second place five times while the Liberal Democrats have also been runners up on five occasions. The 2015 result made the seat the 26th safest of Labour's 232 seats by percentage of majority. In the 2016 referendum to leave the European Union, the constituency voted remain by 78.4%. This was the fifth highest support for remain for a constituency. Boundaries 1885–1918 The seat was created by the Redistribution of Seats Act 1885, as one of four divisions of the new parliamentary borough of Islington. The constituency was defined in the legislation as consisting of the single ward of Upper Holloway of the parish of Islington. The ward was one of eight used in the election of Islington vestrymen under the Metropolis Management Act 1855. 1918–1950 Under the next redistribution of seats by the Representation of the People Act 1918 constituencies in the County of London were defined in terms of wards of the metropolitan boroughs created in 1900. Islington North comprised three wards of the Metropolitan Borough of Islington: Tollington, Tufnell and Upper Holloway. 1950–1974 At the next redistribution of seats by the Representation of the People Act 1948 the constituency was again defined as Tollington, Tufnell and Upper Holloway wards of the Metropolitan Borough of Islington, with boundaries as they existed at the end of 1947. 1974–1983 In 1965 local government in Greater London was reorganised, with the formation of London boroughs. The changes were reflected in parliamentary boundaries from 1974.