UK and US voters are highly cynical. They express it differently.

It’s not just football versus soccer. Britain and America share a language and deep historical ties, but their political systems are an ocean apart. That could be good news for President Donald Trump. As Republicans in the United States search for clues about the political mood ahead of November’s crucial midterm elections, a parliamentary by-election in Makerfield, England, is demanding attention. It’s not just that the special election could kick off a chain of events ending in Keir Starmer being ousted as prime minister — the contest itself serves as an early test of whether the anti-incumbent anger that upended Western democracies in 2024 remains a potent force.But a new analysis of POLITICO Poll results suggests British and American voters respond to that political frustration in different ways. While cynicism about politics is widespread and persistent in both countries, British voters, with an array of political parties across the ideological spectrum, are willing to abandon their party in search of an alternative. American voters, by contrast, remain largely constrained by the two-party system — limiting just how far they can go in channeling their frustrations. In the U.K., just half of those who voted for Starmer’s center-left Labour Party in 2024 plan to vote the same way in the next election, according to the survey conducted by Public First from May 8 to May 11.Meanwhile, strong majorities of Americans — including 75 percent of Trump 2024 voters and 86 percent of voters who backed former Vice President Kamala Harris — plan to stick with their party, underscoring just how little voter movement there tends to be in the U.S.“We have a far, far more fluid system, I think, even than in the U.S., so people will switch parties,” said Mark Shanahan, an associate professor of political engagement at University of Surrey in Guildford, England. That could be a saving grace for Trump and the GOP as they brace for a midterm landscape more difficult than initially ex