The 2016 Labour Party leadership election was called when a challenge to Jeremy Corbyn as Leader of the Labour Party arose following criticism of his approach to the Remain campaign in the referendum on membership of the European Union and questions about his leadership of the party.

Jeremy Bernard Corbyn is a British politician who served as Leader of the Opposition and Leader of the Labour Party from 2015 to 2020. On the political left of the Labour Party, Corbyn describes himself as a socialist. He has been Member of Parliament (MP) for Islington North since 1983. As of October 2020, Corbyn sits in the House of Commons as an independent, following the suspension of the whip.