AV IS NOT PR ...

I know this is hardly the question of the moment in the UK, but the way the Australian general election is panning out does show how the alternative vote – preferential voting in single-member constituencies – can lead to landslides even more unproportional than those that often happen under first past the post. The exit polls suggest a right-left percentage share of the vote of 53-47 but a right-left percentage share of seats of roughly 66-33.