That sounds more like STV. IRV is only for single winner elections. You can't get coalitions or anything like that from single winner elections. The 2 major par

That sounds more like STV. IRV is only for single winner elections. You can't get coalitions or anything like that from single winner elections. The 2 major parties would still dominate any single winner election under IRV. The problem with IRV is demonstrated in more detail here: https://www.youtube.com/watch?v=7Q7rzqJ0YS8 https://www.youtube.com/watch?v=7Q7rzqJ0YS8 I think it's still better than FPTP, and it does let third parties at least get some attention. But there are other, better, systems. IRV has been adopted in a few places in the US, and then abandoned shortly after. I think systems like approval voting have a better chance of catching on.