London mayoral contenders limber up for a race that is Sadiq Khan’s to lose

Every election cycle, the question of London's mayoralty tends to be framed as a referendum on the incumbent, and 2028 looks set to be no different. Sadiq Khan's political obituary has been written before—most notably in 2021, when some predicted a Conservative surge—yet he has repeatedly defied expectations. The Guardian article (https://www.theguardian.com/politics/2026/sep/06/london-mayor-contenders-race-unseat-sadiq-khan) notes that both the Tories and Reform believe there is a path to victory by courting disaffected Labour voters. Whether that path is real or a mirage depends on a critical question: are Londoners simply tired of Khan, or are they tired of the national government's agenda? The strategy of targeting Labour voters is not new, but it is revealing. For the right to win in a city that has been consistently hostile to Conservative policy at the national level, they must build a coalition that transcends traditional party lines. That means leaning into local concerns—policing, housing affordability, and the perceived overreach of policies like Ulez—rather than national talking points. What remains uncertain is whether the right can offer a coherent alternative vision for London, or whether they will simply run as the "anyone but Khan" option, a tactic that has historically underperformed in the capital. Reform UK's emergence adds a new dimension to the contest. The party has shown an ability to disrupt Conservative strongholds, but London's electorate has never been fertile ground for populist right-wing messaging. If Reform and the Tories split the right-of-centre vote, it could inadvertently hand Khan a fourth term even if his personal popularity is waning. The strategic calculations of both parties are therefore as much about each other as they are about the incumbent. Khan's coyness about standing again is a deliberate piece of political theatre that keeps all options open. If he runs, he will likely be the frontrunner. If he steps aside, the Labour field would become volatile, and the right's chances would improve significantly. For now, the bicycles are out, the door-knockers are mobilizing, and London's political class is once again bracing for a contest that is Khan's to lose—but only if he chooses to play.