Keith Edmonds is a Data Scientist by profession and a Physicist by training. He is the Director of Canadian Electoral Research for the Equal Vote Coalition. He invented Vote Unitarity and subsequently derived Sequentially Spent Score from its principle. He also derived Single distributed vote as a more natural extension of Sequential proportional approval voting to Score voting ballots than Reweighted Range Voting. He invented STLR voting voting as a Utilitarian alternative to STAR voting for single winner elections. He has written a software package to simulate multiwinner elections.