I think what you're thinking of is called either Ranked Choice or Instant Runoff Voting. We're actually voting on a citizens' referendum in Maine (U.S.A.) to institute it here - part of the interest in it is due tot he fact that we've elected our Governor with less than 50% of the vote many times over the past 20 years or so, and our current governor (elected w/ 38% and 48% of the vote in respective terms) has been an embarrassment lately. We're going to make it applicable to state and federal offices (Reps and Senators) too.
We tend to have a lot of Independents and Greens run here (one of our current Senators is an Independent) and be successful. I'm really interested to see how it turns out.
We tend to have a lot of Independents and Greens run here (one of our current Senators is an Independent) and be successful. I'm really interested to see how it turns out.