The future of the world may depend on what a few thousand Pennsylvania voters think about their grocery bills | Timothy Garton Ash

The Harris-Walz ticket has transformed the presidential race. But on the ground it's clear: Trump could still win

On 5 November, people around the globe will tune in to watch the world election. It's not a world" election in the sense of the World Cup - a football championship in which many nations actively participate - but it's much more than a World Series, the curiously named baseball championship that involves only teams from North America. This year has been called the biggest election year in history. By the end of it, something approaching half the world's adult population will have had the possibility to put a cross against a name on a ballot paper. But the US presidential election is the year's big match.

Why? Because this is a genuine democratic election that will result in a single person holding exceptionally concentrated executive power in what is still the world's most powerful country. It's a highly watchable soap opera, with a classic plot familiar to all. And one of this year's two contenders, Donald Trump, is a danger to his own country and the world. If the election" of the president of China, the world's other superpower, were a genuine democratic choice, that event would perhaps be as consequential. But it isn't, so it isn't. Russia had a presidential election" earlier this year, but at issue was only the size of Vladimir Putin's declared majority.

Timothy Garton Ash is a historian, political writer and Guardian columnist