The much-anticipated vote on British Exit from the European Union is scheduled for Thursday. Prime Minister David Cameron used stark terms today to describe the consequences for the economy. "I feel so strongly that Britain should remain in Europe. Above all, it is about our economy: It will be stronger if we stay, it will be weaker if we leave." The "Leave" campaign is based on mistrust of distant bureaucrats, fear of the global economy and anxiety over immigration -- shades of Donald Trump and Bernie Sanders. We hear about an American-style political struggle, complete with vitriol and shameless exaggeration.