How much does my vote matter?
Turns out, quite a lot. In this election, seven seats were won by fewer than 100 votes.
That's up from just one seat in 2019 - when
Sinn Fein’s Michelle Gildernew won Fermanagh and South Tyrone by 57 votes.
But there have been smaller margins. In 1886, Conservative John Edmund Wentworth Addison drew with the Liberal candidate in Ashton-under-Lyne. He became an MP when the local mayor cast the deciding vote.
Rules have changed since then, and no constituency came as close as that in 2024. But some candidates got in by the skin of their teeth.
It was a tense night for the candidates in Hendon, the closest constituency of the 2024 election.
Labour candidate David Pinto-Duschinsky had tried - and failed - to win the seat before. But this time he squeezed in with just 15 more votes than his closest rival.
After a recount, he won with 15,855 votes. Ameet Jogia of the Conservatives had 15,840.