When I was working on a cruise ship, a noticeboard poster said it all: “Please remember that Americans consider it acceptable to brag about their kids. Australians do not.”
Instant runoff voting is preferential. Preferential is a property that a voting system can have, where you number candidates in order of preference.
Instant runoff is one specific algorithm that can be used which is preferential. Single transferable vote, used in the Senate, is another preferential system. It’s also sort of a general case of IRV, allowing for more than one winner per race. (Or it might be more accurate to say that IRV is a special case of STV where N=1.)
Another preferential system is Minimax. Minimax basically simulates every possible head-to-head race between two of the candidates and declares the overall winner to be the one who performed best* across all of those races. I don’t actually think it’s used anywhere in the real world.
But incidentally, if you do hear the term “preferential voting” used, they’re probably talking about IRV. It’s the most common and the simplest preferential system.
* is does this by asking “which candidate performed the best in their worst match-up?”
Only the Senate is preferential. The lower house uses Instant-runoff Voting.
Instant runoff voting is preferential. Preferential is a property that a voting system can have, where you number candidates in order of preference.
Instant runoff is one specific algorithm that can be used which is preferential. Single transferable vote, used in the Senate, is another preferential system. It’s also sort of a general case of IRV, allowing for more than one winner per race. (Or it might be more accurate to say that IRV is a special case of STV where N=1.)
Another preferential system is Minimax. Minimax basically simulates every possible head-to-head race between two of the candidates and declares the overall winner to be the one who performed best* across all of those races. I don’t actually think it’s used anywhere in the real world.
But incidentally, if you do hear the term “preferential voting” used, they’re probably talking about IRV. It’s the most common and the simplest preferential system.
* is does this by asking “which candidate performed the best in their worst match-up?”