2025 Senate Notes Part One

This is the latest in a string of articles that I write after each Senate election tracking certain themes in the Senate races.  Previous volumes in the series were called Senate Reform Performance Review, referring to the 2016 Senate changes that got rid of Group Ticket Voting.  I think now we've reached the point after four elections where it's very clear that the new system works very well indeed and needs no longer to be considered on probation, hence the shorter title.  For previous instalments see 2016 part one, 2016 part two, 2019 (single article) and 2022 (single article).  On the agenda for this issue are:  proportionality, winning vote shares (with a focus on the One Nation wins from behind), preferencing impacts, and the curse of Inclusive Gregory.  Part two covers Senate 2PP, How to Vote cards, just-voting-1, exhaust, informals, below the lines,  and the fun bit about people who we wonder why they bother.   And yes that includes the ACT Liberals! 

I've decided again to split the article into two because the volume of material this time is a bit much for one go.  At least for my own feeling that I'm spending a lot of time on a single article that I haven't released anything from yet.  

In this article I treat Labor, Greens and Pocock as comprising the left of the Senate (in relative terms, this should not be taken as me declaring Labor to be an outright left-wing party) and Coalition, One Nation and UAP as the right (with Jacqui Lambie treated as neither though these days there is a case for treating her as left if anything).  

Senate Reform Performance Review Part 2

In this piece I continue the roundup of the performance of the new Senate voting system that I started in part 1.  Part 1 covered proportionality, half-Senate projections, winning vote shares, the impact of preferencing, just-vote-1 rates and exhaust.  This part covers  informal votes, the One Nation question, below the line rates, the two most unusual victories (Lisa Singh and Malcolm Roberts), the impact of the fixed quota, the question of verification and areas for improvement. (There's also a brief note about Inclusive Gregory that isn't relevant to reform, but that I thought I should mention anyway).  Anything else I think of may be tacked onto the end.  I have already discussed donkey-voting, proximity preferencing, the abject failure of most parties' how-to-vote cards, and preferencing patterns by state on the Button Press Week thread. Also, lots of Tasmanian-specific stats can be found on the Tasmanian button press thread.