Voting begins in one of the most eagerly awaited and fiercely contested byelections of recent years

The Home Office has dismissed as “absurd” claims that it failed to properly communicate new border rules that left some British dual nationals at risk of being prevented from boarding flights to the UK, Lisa O’Carroll reports.

Good morning. In Gorton and Denton, on the outskirts of Manchester, people have started voting in one of the most eagerly awaited, and fiercely contested, byelections of recent years. All the polling suggests the result will be very close. The political scientists argue that, if a party wins a contest like this by just a few hundred votes (or perhaps ever fewer – Reform UK won the Runcorn and Helsby byelection last year by just six votes), it is irrational to draw broad conclusions about the state of UK politics over a result that could easily have gone the other way had it not been for a few random incidents (like activists not closing the door in a cafe). But politics isn’t rational; a win will firm up a narrative that will shape the way the main parties do politics in the months ahead. (And, whoever wins, the result will confirm that we now have multi-party politics trying to operate in an electoral system constructed for two-party politics, which is leading to questions about the fairness of the outcomes it produces.)