Too Long; Didn't Read
In my previous <a href="https://medium.com/@puntofisso/how-to-create-an-interactive-vote-swing-viewer-in-d3-a6bbd4c96b6f" target="_blank">post</a> I walked through how I used D3 to create a Labour/Conservative swing viewer for the coming General Election. It is a pretty simple, not particularly performant, but useful tool which can easily be readapted to any other elections with a meaningful 2-party swing.