Would hitting 3.5% GDP on defence justify cuts elsewhere in public spending?

There is a clean generational hinge in this vote, and it is the opposite of the one usually assumed. It was the under-25s who recoiled from trading public spending for a bigger defence budget, three to one against, while every other age band, rising to three in four among the 55-64s, backed the trade-off. Britain's oldest voters, who grew up with the Cold War and the postwar settlement both intact, were readiest to accept the guns-before-butter logic; its youngest, facing the sharpest end of any NHS or welfare squeeze, were not.

Gender opened a second fault line: men backed the swap by a wide margin, women split straight down the middle. That gap reads less as pacifism than as proximity to the services most likely to be raided to pay for it — women disproportionately staff and rely on the NHS and welfare system that 3.5% would squeeze.

The result lands the vote squarely on the guns-versus-butter axis that has run under British politics since austerity, now sharpened by Ukraine, Trump-era Nato pressure and a Treasury with no spare room. The chamber, on balance, chose to arm the state before it fed it — but the young, who will do both the fighting and the paying, were not persuaded.