As you already know in FPTP the votes would be split, so with the centrist and the right-wing splitting the vote
Ah, but it was never that. The party I’m calling centrist is viewed as centre-left here by the media and general public. With our IRV, this bears out with approximately 80% of the preferences of centrist voters going to the left-wing party; the same ratio as votes from the left-wing party that go to the centrist party. (Why about 20% of left-wing voters prefer the right-wing over the centre I will never understand.) Greens and Labor split each other’s votes, not Labor and LNP.
abff08f4813c@j4vcdedmiokf56h3ho4t62mlku.srv.us 2 weeks ago
Sounds reasonable enough, actually.
Hmm, puzzling. If they were USians then I'd suggest that it was because they confused over the name (liberals are always on the left, right?) but I digress.
Isn't it though? As you wrote,
Just as it'd be confusing why left-wing voters would support a right-wing party over a centrist or centre-left party, it'd be equally confusing why right-wing voters would support a left-wing party (the Greens) over the centrist one. Well, sounds like they didn't.
(With IRV of course it's not that this happened because of a split vote but that because Labor had more support in the first preference that it survived over the Greens, when normally it'd be the other way around - so the specific reasons are different and a bit more complex, but this specific result which occurred is intuitive to someone who only understands FPTP. More generally, both FPTP and IRV suffer from spoiler effects (as explained in https://en.wikipedia.org/wiki/Spoiler_effect ) - while IRV is better than FPTP there are still cases where spoiler effects can happen and this example of a Green losing to a Labor due to a loss of support by the LNP is one of them - it just feels more intuitive to someone familiar with FPTP because this is the worst when it comes to spoiler effects).