BREXIT DENIED? British court delivers blow to E.U. exit plan, insists Parliament has a say.

The decision greatly complicates May’s stated plan to trigger Article 50 — the never-before-used mechanism for a country to leave the European Union — by the end of March at the latest.

Most members of Parliament opposed Brexit in the lead-up to Britain’s June referendum, when voters opted for an exit by a 52-to-48 margin. On the streets, however, the court decision risked setting off an angry backlash from voters who favored leaving the European Union and believed the issue was settled.

May’s lawyers argued that she had the right to begin the Brexit process without first getting Parliament’s consent. But a three-judge panel on the London-based High Court sided with a group of plaintiffs who contended that Parliament must first weigh in.

Brexit may come down to whichever way vulnerable MP’s think the wind is blowing.