The first rule in setting an elephant trap? Don’t let the elephant see it. After Parliament wrested control of the agenda away from PM Boris Johnson and Tories expelled 21 of its MPs, Johnson demanded a snap election on October 15th and dared Jeremy Corbyn to agree to it: Johnson cast the rebellion as an attempt to surrender to the EU, vowed never to delay Brexit beyond Oct. 31 and challenged opposition Labour Party leader Jeremy Corbyn to agree to an Oct. 15 election.“Can I invite the leader of the opposition to confirm, when he stands up shortly, that...