When Keir Starmer stepped down as British prime minister this week, it said as much about his troubled premiership as it did about a crisis facing other social-democratic Labour parties.
Much was made of Labour’s “landslide victory” in the UK in 2024, when the party won 411 of 650 seats in the House of Commons. But Britain’s disproportional first-past-the-post electoral system had transformed just one third of the popular vote into a commanding parliamentary majority.
