Lately I've been seeing a lot of social media griping about the current government and/or the Greens and teals, mostly from alternative right-wing accounts, in which the writer attacks the Government and says it was only elected because of preferential voting, and we should get rid of preferences by switching to first past the post. I don't think there is much significant advocacy for first-past-the-post in Australia though Brisbane Lord Mayor Adrian Schrinner has unfortunately supported it (what, optional preferences is not enough for him?), as has Resolve pollster Jim Reed in 2022, and a steady flow of petitions to the Commonwealth Parliament generally with tiny signature numbers.
The following alone is sufficient reason to dismiss all such calls: First past the post is a discriminatory system that violates the Australian value of a fair go. Under first past the post, a voter whose most preferred party or candidate is unpopular must make a strategic decision between voting for someone who is not in fact their first preference and effectively throwing away their vote. However a voter who is pretty sure their most preferred candidate will finish first or second does not have to face that strategic dilemma. On this basis, having first past the post, in a country able to afford and count a fairer system, is not treating all electors fairly. I do not think there is actually any valid excuse for keeping single-member first past the post anywhere (though the transition out of it needs to be carefully managed in those places that do have it) but this article is confined to the argument re Australia.
Australia has a proud tradition of fair voting that started over 100 years ago when preferences were introduced to stop conservative parties from losing conservative electorates when voters were split between two different conservative candidates. The famous case is the 1918 Swan by-election, but in fact the Hughes Government was working to introduced preferential voting months before it occurred but the legislation had not yet passed the parliament. When I see supposed patriots with Australian flags in their social media profiles propose that we junk this fine tradition and replace it with unfair and primitive crud voting systems used overseas, I can only shake my head at their claims that they really love this country. I am not going to let these people get away with it; to paraphrase a slightly different Doctor, this voting system is defended.
Similar to my polling disinformation register, I've written this article mainly as a labor-saving device so that I don't have to keep making the same long replies on the same points but can simply say "see point 3 here" with a link. I hope others find it interesting and useful, and more points may be added.
I should note that this article also applies to many criticisms of compulsory preferences made by supporters of optional preferencing - especially part 7.