With Concordet voting, listing someone as your second choice can cause your first choice to lose, which would probably confuse a lot of people.
1. Anecdotes of people thinking it was literally three votes, or people who only voted for the first round, still came up.
2. Voting was too tactical for most people's tastes; in the mayoral race a majority never appeared, thus there were ultimately 11 rounds of runoffs(with 12 candidates), yet you could only pick the top three; voting only for minority candidates left your vote out in the final rounds as they got eliminated.
3. The election still had historic-low turnout.
On the other hand, I still think the result showed a lot of promise.
* 8 people vote: A, C, B * 5 people vote: B, C, A * 4 people vote: C, B, A
IRV eliminates C, despite the majority of voters preferring C over B (12 to 5). The order of elimination means that significant secondary preferences are often ignored.
6 * Republicans, Libertarians, Democrats; 5 * Democrats, Libertarians, Republicans; 2 * Libertarians, Democrats, Republicans.
Liberians are eliminated (despite the majority of voters preferring them over the Democrats), and Democrats win.
Notice how when you use party names, it makes more sense? The Republican and Democrat voters are simply voting "anyone but the other major party". If they are neck-to-neck on primary votes, then the secondary votes of the minor parties start to be counted. This is a feature, not a bug.
Further, I don't think real-world voting would match up exactly with the above. There are people that would vote R/D/L and D/R/L, both of which are lacking from this example that would swing things away from the Libertarians.
I had a roommate who worked for a voting reform nonprofit and he said even gathering signatures for "simple" IRV is quite challenging. It's just too hard to explain quickly.
The plural of anecdote isn't evidence, I know, but: I had Condorcet voting briefly explained to me at a young age, and I grasped it immediately. I couldn't do the math, but it was conceptually really easy to grasp. I didn't fully understand the current US system until around age 20.
Unfortunately, HN readers are not representative of the general population. It's not that complicated, no, but I can see people having a lot more trouble with understanding Concordet voting than with understanding IRV.
To that end, I built https://modernballots.com. It's difficult to get mindshare when it comes to these kinds of things though. Electoral reform activists are fractured between their own preferred methods. Kinda keeps things from going anywhere.
My intuition on this goes as follows: Imagine one single spectrum of policy, that goes from "Left" to "Right" for example. Assume voters exist somewhere on this spectrum, and will vote for the candidate whose policy is nearest to theirs on the spectrum. Then so long as there are exactly two viable candidates then they both have no incentive to deviate from the median voter. Each candidate picks up one whole side of the spectrum, and the only thing that can happen as a candidate makes their policy more extreme is that the median voters begin to see the other candidate as closer.
Of course, the actual US election system is far more complex. Very extreme voters do in fact "throw their vote away" if both candidates appear far from their policy. There are a lot more issues than just one, so a single spectrum of policy is oversimplified. Many voters vote on individual issues, which are often black and white (e.g. pro-life/choice, for/against gay marriage). You could probably argue that candidates actual policies have very little to do with their stated policies, or that voters are significantly more swayed by advertising dollars than policy. All of these are real concerns, but I think the basic point stands: a two-party system encourages both candidates to situate themselves at more or less the median of the American electorate, which I consider a desirable outcome.
i don't understand. your vote is basically thrown away regardless of who you vote for. the statistical likelihood that your vote has any impact except in the tightest of races is miniscule.
do people really believe that their vote is "not thrown away" only if they vote for the winning candidate?
Nothing would do more damage to the two-party system than for the argument "if you vote for a third party, you throw your vote away" to be demolished.