The system allows voters to pick their first, second- and third-choice candidates – and could encourage more civil campaigns.
Some American voters hope that instant runoff can make our elections better. But a mathematician has an idea for another solution.
In this year's election, the system of majority voting didn't allow voters to express their opinions adequately. If they had, the choice would have been between Kasich and Sanders.
What if you could go into a voting booth and rank your first, second and third choices? It could happen in Maine, if voters approve.