With the 2024 general election just around the corner, we're revisiting a valuable episode from earlier this year: Virgin Media's political correspondent Gavan Reilly sits down with us to explain what exactly proportional representation with a single transferable vote (PR-STV) is all about. Do you need to give a preference to every candidate listed on a ballot paper? How and when do preferences beyond your first come into play? How do transfers work, and what is the quota?