Interestingly, IRV has led to two-party duopoly in EVERY country where it has been used on any scale: Ireland, Australia
That is not true. Don't you know anything about Irish or Australian politics, or do you just look at a list of the party affiliations of the prime ministers?
Re: Missing the point
That is not true. Don't you know anything about Irish or Australian politics, or do you just look at a list of the party affiliations of the prime ministers?