May Appeals to U.K. Public on Brexit\, Pressuring Parliament

May Looks to Public to Back Brexit Deal

Polls show the British public would back May’s plan over crashing out of the EU, but forging a majority for Parliament’s Dec. 11 vote looks difficult

LONDON—A day after European Union leaders waved through a deal laying out the terms for British departure from the bloc, the British government has shifted into campaigning mode.

The aim is to convince the British public that the accord Prime Minister Theresa May spent nearly two years negotiating is the best available and thereby encourage wavering British lawmakers to back it in a knife-edge vote scheduled for Dec. 11.

The...