Under the present rules it takes 51 MPs and MEPs to trigger a leadership election before the party conference by nominating an alternative candidate. (totalpolitics.com)
Most party members recognised in the last parliament that, whatever the alleged shortcomings of Gordon Brown, triggering a leadership election in the run up to a general election would only serve to increase divisions in the party. (leftfutures.org)
Last week, Len McCluskey triggered a leadership election by announcing his intention to resign as general secretary. (theguardian.com)