The latest news, analysis and insights from our politics teams from Sacramento to D.C. Enter email address You may occasionally receive promotional content from the Los Angeles Times. Pew began to study the comparison during Britain’s divisive debate over leaving the European Union and the campaign leading up to Donald Trump’s election as president. Researchers “really wanted to see what the concepts of nationalism and cosmopolitanism mean in the modern era,” said Pew’s Laura Silver, one of the lead authors. What they found provides insights into America’s divides and how those differ from other wealthy democracies. The numbers, based on surveys of more than 4,000 adults in the U.S., France, Germany and the U.K., provide important context for understanding the Republican Party’s continuing evolution away from the country’s business establishment and toward becoming a more populist party of the right.