A Conservative British prime minister sets the date for a long-awaited vote in the early summer and the United States follows with a momentous presidential election a few months later. It happened in 2016, when Britons voted for Brexit and Americans elected Donald J. Trump, and now it’s happening again. Political soothsayers might be tempted to study the results of Britain’s July 4 general election for clues about how the United States might vote on Nov. 5. “We’re just in a very different place politically than the U.S. right now,” said Robert Ford, a professor of political science at the University of Manchester. The Conservatives have been in power for 14 years, Brexit has faded as a political issue, and there is no British equivalent of Mr. Trump.
