Who is next in line to run Labour? Vote here on the top contenders
Labour leader Jeremy Corbyn has vowed to fight any challenge for his job but here are some of the candidates to replace him if he is forced out.
Barnsley MP Dan Jarvis, who declined to run a year ago, is the clear favourite - but the party could choose to parachute former minister David Miliband into the West Yorkshire seat of Batley and Spen, vacated by the murder of Jo Cox two weeks ago.
Click the up or down arrows to rate the prospective candidates.