STV Guide and visualisations

View STV Guide →
2016, 2019
Web development,
Data visualisation
Screenshot of the STV Guide website. Shows a diagram with descriptions of what happens at each count of an STV election.

New Zealand’s local councils have slowly been adopting an STV-based voting system - where voters rank candidates in order of preference, rather than choosing a single person to give their vote to.

To help provide the public with a clearer understanding of the system, I collaborated with designer Thomas Le Bas to extend my earlier Flag Graph visualisation into an informative website that provides interactive examples showing how votes are counted in a few common scenarios.

Following New Zealand’s 2019 local elections, I extended this to produce a series of static charts showing the vote transfers for STV-based mayoral elections.