https://fromtheheartofeurope.eu/comparing-electoral-systems-by-david-m-farrell/

This is basically a survey of electoral systems in the sense of formulae for translating votes cast into seats won, and goes through first-past-the-post, second ballots, alternative vote, list systems, additional member systems and finally the Single Transferable Vote, which is of course the best system of them all (surely an uncontroversial conclusion).

It’s thorough and informative, though I regret that there is not more Eastern Europe in it – by 1997, many of the new democracies were in their second or third electoral cycle and could have supplied useful data. Nowadays we have seen stable multi-party systems emerge in many parts of the world, and also electoral innovation even in the UK.

I see that a third edition of the book is coming out in November, at an eye-watering price. ( )