Barring unforeseen disaster, a new government with a whopping majority would usually expect a second term. But for Labour, with prospects for a decade in power, our political system is now less clear cut.

In 1951, the two main parties accounted for 97% of the vote with turnout at 83%. This year, they combined on 57% with a 60% turnout. Political support is increasingly fragmented. And the Conservative collapse from 43% of the vote in 2019 to 23% in 2024 means the electorate is volatile too.