2021 Hartlepool by-election

A by-election for the United Kingdom parliamentary constituency of Hartlepool was held on 6 May 2021, triggered by the resignation of incumbent Labour Party Member of Parliament (MP) Mike Hill, who stood down over allegations of sexual harassment. It was won by Jill Mortimer of the Conservative Party with 51.9% of the vote and a swing of 16%—the largest ever swing towards an incumbent governing party in recorded UK by-electoral history.

Source: Wikipedia — 2021 Hartlepool by-election (CC BY-SA 4.0)