Wouldn't this nullify the primary advantage of range ballots, if I understand you correctly? Namely, you'd still have to rank one of the two main candidates as first so that the other doesn't win.
Yes, there wouldn't be any additional benefit in terms of vote-counting at first. Our current "vote for one candidate" approach is the same as picking your top choice in a ranked ballot.
But the benefit would be that we'd actually have data on being able to say, "Here's who would have won if we had used IRV, here's who would have won if we had used Condorcet", etc. And then later pick the actual counting method that proves effective.
I mostly like the idea is because I think the debate over counting method gets in the way of the debate over using ranked ballots.
A risk would be someone picking a different first-choice candidate than they otherwise would, out of improperly believing that their preferences would be counted.
That risk is sorta what I was bringing up: if it only counts the top person then people have to vote strategically and hence will not be voting in the same manner as in IRV so we still wouldn't know who would have won by IRV.
It would be best if they picked their plurality vote, and then could optionally rank candidates; we could then tally up how many people vote for their non-favorite as a big stick to wield.
